Exhibitors at ACC.26, the 2026 annual meeting of the American College of Cardiology, received a logo guide with rules that read like a contract. The logo came in a white and a blue version, with a fixed clear space around it. Exhibitors were told not to stretch, cut apart or recolour it, and final versions of every promotional item had to be submitted for approval by 13 March 2026. Breaking the rules could cost an exhibitor priority points, and in serious cases the booth.
That document shows what event branding really is at a B2B conference. It is not the logo reveal at the kick-off meeting. It is a system that printers, venue crews, speakers, sponsors and exhibitors apply without you in the room. This guide shows you how to build that system from the hardest surfaces backwards: the badge, the hanging sign, the phone screen and the sponsor wall.
What event branding covers, and what it does not
Behind rules like these sits a simple definition. Event branding is the visual identity of your event and the rules for using it. It covers the logo and its versions, colours, typefaces, imagery and the templates built from them. It also covers how other people may use those elements, which is where most conference brands fail.
It is not the name. The name, tagline and edition theme are words, and our guide on how to name an event covers how to find and test them. This guide starts once the words are fixed and asks what they should look like on every surface.
A useful split separates three layers with different lifespans:
| Layer | What belongs to it | How long it lasts | Who applies it |
|---|---|---|---|
| Permanent identity | Logo family, core colours, typefaces | Many editions | You and your agency |
| Edition layer | Theme graphic, accent colour, year | One edition | You, for this year’s campaign |
| Applied layer | Badges, signs, slides, sponsor lockups | One edition | Printers, speakers, sponsors, exhibitors |
The permanent identity changes rarely, the edition layer changes every year, and the applied layer is mostly made by other people.
Start with the hardest surfaces, not the logo reveal
With the three layers in place, the next question is where the brand has to work. Picture the head of marketing at a professional association, approving her agency’s concept for the annual congress. She sees it on a large monitor, at full size, on a white background. Almost nobody else will see it that way.
Her delegates will see the brand on a badge in a coffee queue, on a sign above a corridor and in an app on a five-inch screen. Her sponsors will see it squeezed next to twenty other logos. List those surfaces before you judge any design:
| Surface | Typical constraint | What breaks first |
|---|---|---|
| Name badge | Read at one to two metres, often printed on site | Thin type, long organisation names, pale colours |
| Hanging or wall sign | Read from 10 to 15 metres, often in mixed light | Small letters, low contrast, decorative fonts |
| Event app and website | Phone screen, small header, dark mode | Wide logos, detail that disappears at small size |
| Stage screen and slides | Projected or LED, seen from the back row | Pale tints that wash out, text set too small |
| Sponsor wall | Your logo among many others | Clear space, inconsistent logo heights |
| Social avatar | A small circular crop | Horizontal lockups that do not fit a circle |
Ask the agency to show every concept on these six surfaces, at real size, before you choose. Print the badge on paper and hold it at arm’s length. A concept that looks impressive on a large monitor may fail on a printed badge.
Build a logo family, not a single mark
Once you know the surfaces, the logo question changes. You no longer need one perfect mark. You need a small family in which each member fits a surface.
- Full lockup: the logo with the full event name, in a horizontal and a stacked version, for the website header, banners and the stage.
- Symbol only: a compact mark without words, for the app icon, social avatars and favicons.
- One colour version: for embroidery, etched glass, single colour print and lanyards.
- Reversed version: white on your dark brand colour, for dark stage backgrounds and video overlays.
The brand guidelines for World Workplace 2026, the conference of the International Facility Management Association (IFMA), are a good public example. They supply the logo as horizontal and stacked SVG files and define a palette of five colours. They also allow those colours to be used interchangeably as backgrounds, so every sign does not need the same blue.
Keep the permanent family stable for several editions. Jenni Romaniuk of the Ehrenberg-Bass Institute wrote Building Distinctive Brand Assets (Oxford University Press, 2018). She measures an asset by how many people link it to the brand without seeing the name. Her warning applies directly to recurring events: if you change an asset too much while building it, you are not strengthening the same asset. For a congress, that means the logo should stay recognisable across editions, while this year’s theme lives in the edition layer.
A new look every year means starting recognition again.
Colours that survive projectors, printers and colour vision deficiency
Colour is where a stable logo family often loses its consistency. A brand blue that looks right on a monitor can print dull on a badge and turn grey on a projector.
The Web Content Accessibility Guidelines (WCAG 2.2) give you a measurable floor for text. Text needs a contrast ratio of at least 4.5:1 against its background. Large text of 18 points, or 14 points bold, needs at least 3:1 (W3C, Understanding Success Criterion 1.4.3). Logos are exempt, but session titles, room names and app menus are not. Choose at least one dark and one light brand colour that pass with each other, and set text on those, not on your accent colour.
Colour vision deficiency adds a second check. According to Colour Blind Awareness, about 1 in 12 men and 1 in 200 women have some form of it, most commonly red and green. At a congress with 1,000 delegates, 600 of them men, that is roughly 52 people. If your tracks are coded red and green on badges and signs, those delegates may not be able to tell them apart. Give every colour code a second signal, such as a word, a number or a shape.
The projector needs its own test. Pale greys and light tints that look elegant on a laptop can disappear on a projected screen in a bright hall. Ask for one slide with your colours and text sizes at the technical rehearsal, and check it from the last row.
Colour should support the meaning, not carry it alone.
Type and legibility: badges and signs
Accessible colours only help if the letters are big enough. Here, the most useful public yardstick comes from US accessibility law. The 2010 ADA Standards for Accessible Design, issued under the Americans with Disabilities Act (ADA), set minimum letter heights for permanent signs, based on mounting height and viewing distance (U.S. Access Board, Guide to the ADA Standards, Chapter 7). Temporary event signage is a different case, but the formula is a practical way to size letters.
Legibility yardstick
How tall your letters need to be
The consequence for the badge is a clear hierarchy. Put the first name in the largest type, the organisation second and everything else smaller. A badge is mainly there to start a conversation, so readability matters more than decoration. Our guide to event check-in and badge printing explains which printers handle large type and colour on site, and what else a B2B badge has to carry.
For typefaces, two families are usually enough: one for headings and one for body text, both with clear letter shapes in bold weights. IFMA’s 2026 guidelines use Roboto for headlines and Open Sans for body copy, and allow a script font “sparingly, for accent only”. Before you commit, check that the font licence covers print, the event website and the app. A font licensed only for desktop use cannot simply be added to your website.
The signs also need a non-glare finish and strong contrast between light and dark, as the same ADA guidance notes. A glossy banner under spotlights can become hard to read.
Sponsors and exhibitors: write the rules before they ask
The applied layer is where the head of marketing loses control, unless she sets the rules early. Fifty exhibitors will put your logo on their booth graphics, mailings and LinkedIn posts. Some will stretch it, recolour it or set it on a busy photo.
The ACC.26 guidelines show what a firm rule set covers. They define approved logo versions and a clear space unit of 0.125 inch, ban any alteration and prescribe exact wording for the event name. Sponsored sessions follow a set formula, “Event/Session Name, sponsored by Company Name”, plus a disclaimer that industry events are not part of the official programme. Every item goes through approval with at least five business days for review.
Your rules can be shorter, but they should answer the same questions:
- which logo versions sponsors may use, and where to download them,
- the clear space and the minimum size,
- how a sponsored session, lounge or meeting area is named,
- how sponsor logos are sized on shared walls, slides and the app, for example the same height within one tier,
- the deadline and the address for approval.
Equal logo heights within a tier sound pedantic. They prevent the call from the gold sponsor whose logo looked smaller than the silver sponsor’s. The tiers themselves come from your sponsorship package, so align the visibility rules with what you sold.
A clear sponsor rule protects your brand.
The brand sheet and file pack for every supplier
Sponsor rules are one part of a larger job: giving every supplier what they need without twenty separate emails. The format that works is a short brand sheet plus a download folder, sent out with the first supplier briefing.
From concept to file pack
Six steps to an event brand others can apply
- List the surfaces Badge, signs, app, website, stage, sponsor wall, social. Note the size and viewing distance for each.
- Choose the logo family Full lockup, symbol, one colour and reversed versions, all tested at real size.
- Test the colours Check text contrast against WCAG, add a second signal to every colour code, test one slide on the projector.
- Set the type sizes Badge hierarchy and sign letter heights from viewing distance, fonts licensed for print, web and app.
- Write the sponsor rules Logo versions, clear space, naming formula, equal heights per tier, approval deadline.
- Send the file pack One folder and a brand sheet of one to two pages, sent with the first supplier briefing.
The file pack itself should contain:
- Logo files: every version as SVG for the web and app, PNG with a transparent background for office tools, and a print format such as PDF or EPS for the printer.
- Colour codes: each colour in HEX and RGB for screens and CMYK (the four ink colours) for print, plus a spot colour reference if your printer uses one.
- Fonts: the font names, weights and licence notes, with a free fallback font for speakers who build slides on their own laptops.
- Templates: a 16:9 slide template, social media formats, an email header, the badge layout and a signage grid.
- Do and do not: one page with examples of correct and incorrect use, which suppliers read more often than long rules.
Version the folder with a date in the file name. When the venue’s production team asks which file goes on the main banner, the answer should be in the folder.
Digital surfaces: website, app and matchmaking in one look
The file pack covers print and slides. Most delegates, however, see the brand online before they see it at the venue. They register on the website, receive a confirmation email and open the app on the train. If each of these looks like a different tool, the brand feels fragmented before the event starts.
The practical fix is to apply the brand once and let every digital surface use it. When you compare tools, look beyond templates and check whether one setting controls the website, app and registration emails. Our comparison of event website builders shows which platforms connect registration data to the event pages.
Solution: In Converve, you set your logo, colours, font and domain once, and the event website and the web app use the same settings. Delegates open the app in the browser without an app store download, and the programme, matchmaking and meeting schedule appear in your event’s look. QR badges for on-site check-in are created from the same registration data.
Design for the next edition
The final test of an event brand comes a year later. Can you reuse this year’s materials, or do you have to reprint all of it?
Keep the year and the theme off anything built to last. Directional signs, stage frames, banner stands and lanyards can carry the permanent identity only, and this year’s edition layer goes on smaller, cheaper items such as stickers, screens and slides. The same thinking applies to giveaways, as our guide to conference swag attendees keep shows. Undated items have a better chance of being reused.
Reusing items is also how the brand builds recognition. Delegates see the same sign system in the second year and find their way faster. Sponsors know the rules from the year before. The head of marketing briefs the agency on an edition layer, not a new identity.
Frequently Asked Questions
What is event branding?
Event branding is the visual identity of an event and the rules for using it: the logo and its versions, colours, typefaces, imagery and templates. At a B2B conference it also covers how printers, speakers, sponsors and exhibitors may apply these elements on badges, signs, slides and booths.
What should an event brand guide include?
A practical event brand guide includes all logo versions with clear space and minimum size, colour codes for screen and print, and fonts with licence notes. Add templates for slides, social media, badges and signs, sponsor rules and a page of correct and incorrect examples. One to two pages plus a download folder are usually enough.
How big should the name be on a conference badge?
Make the first name the largest element. Based on the ADA sign rules as a yardstick (U.S. Access Board), letters about 16 millimetres high can be read at up to 1.8 metres, and about 28 millimetres are needed at 3 metres. The organisation name comes second.
Which colours work best for event branding?
Choose at least one dark and one light brand colour with a text contrast of 4.5:1 or more, the WCAG 2.2 minimum for normal text (W3C). Use bright accent colours for shapes, not text. Never use colour as the only signal, because about 1 in 12 men have some form of colour vision deficiency (Colour Blind Awareness).
Do I need a new event logo every year?
No. Keep the logo, core colours and fonts stable across editions so delegates learn to recognise them. Change the edition layer instead: the annual theme graphic, an accent colour and the year on campaign materials, slides and smaller printed items.
How do I handle sponsor logos in event branding?
Write sponsor rules before the first sponsor asks. Define the logo versions, clear space and naming formula for sponsored sessions. Give all logos within a tier the same height on shared walls, slides and in the app, and set an approval deadline for materials that use your event logo.
A brand that works without you
Good event branding works on the badge, the sign and the phone. It also survives the moment a sponsor’s designer opens your files without you. Build the system from those hardest surfaces, keep the permanent identity stable and give suppliers a file pack that answers their questions before they ask.
If you want your event website, app and matchmaking to carry one look from registration to the last meeting, get in touch with Converve. You can also see how our event website and app take your branding from one source.
