If people have to work to read your website, you’re losing attention before they’ve even engaged with your content. Colour contrast is one of the most common reasons the accessibility of your website might be falling short.
Colour plays a big role in how a brand is recognised. It’s often one of the first things defined and one of the last things teams want to change. On a website, colour plays a much larger role than just signalling identity. For some people, it directly affects their ability to read and use what’s in front of them.
This is where colour contrast becomes important, and where a lot of websites fall short without realising it.
What colour contrast actually means
Colour contrast is the difference in brightness between text and its background. When that difference is too small, text becomes harder to read. For some users, it becomes unreadable.
This isn’t limited to people with diagnosed visual impairments. It affects anyone using a screen in less-than-ideal conditions. Bright sunlight, low-quality displays, screen glare, or even tired eyes can all make low-contrast text difficult to process.
When contrast drops, the effort required to read increases. Most users won’t spend time figuring it out. They’ll move on.
Why contrast matters for accessibility
Accessibility standards such as WCAG define minimum contrast ratios so content can be read by as many people as possible. For standard body text, that ratio is 4.5:1. Larger text has a slightly lower threshold, but still needs enough contrast to be clear.
If your website doesn’t align with these ratios, some users will struggle to use it. In practical terms, that means content is harder to follow, navigation becomes less obvious, and important actions are easier to miss.
From a business perspective, that introduces friction. The harder it is to read and navigate your site, the less likely users are to stay and complete what they came to do.
Where contrast issues tend to appear
Most contrast problems aren’t a deliberate attempt to hide content from users, and instead come from design choices that look right in isolation but don’t hold up in use.
Light grey text on a white background is a common example. It looks clean, but quickly becomes difficult to read. Brand colours are another source of issues, particularly when they’re used for text without being tested. Text placed over images or gradients often suffers from the same problem, especially when the background isn’t consistent.
Buttons and links can also become harder to distinguish when contrast is too low. They may look subtle, but that subtlety comes at the cost of clarity. Across an entire website, these decisions add up. A site can be beautifully designed, but if it’s difficult to read it’s not serving its true purpose.
Where brand guidelines create problems
This is usually where things become more complicated. Brand palettes are often fixed, and there’s an expectation that they’re applied consistently. In some cases, those colours simply don’t meet accessibility requirements when used for text or key interface elements.
That creates a tension. On one side, there’s a desire to maintain brand consistency. On the other, there’s a need to make content readable and usable. In practice, many teams lean towards preserving the brand exactly as defined, even when it introduces usability issues.
The problem is that if users can’t read or interact with your content easily, the brand experience is already weakened.
Why small adjustments are often enough
Improving contrast doesn’t usually require a complete redesign. In many cases, small changes make a significant difference.
That might involve using slightly darker variations of existing brand colours for text, or introducing secondary colours specifically for functional elements. It can also mean being more selective about where certain colours are used, particularly in areas where clarity matters most.
The aim isn’t to do a full overhaul of you brand, and it certainly isn’t to make all websites look boring or unappealing. The aim is to make the digital world beautiful and usable for all.
When a brand needs to be revisited
There are situations where minor adjustments won’t solve the problem. If a brand relies heavily on low-contrast colours, especially for text and key interactions, it may need to be adapted more deliberately for digital use.
This doesn’t mean abandoning the brand. It means recognising that websites are interactive systems, not static assets. What works in print or presentation doesn’t always translate directly to a screen.
Adapting a brand for accessibility is part of making sure it performs properly in the environments where people actually use it.
The wider impact on performance
Colour contrast affects more than accessibility compliance. It influences how quickly users can process information and how confidently they can move through a site Clear, readable content reduces friction. Users spend less time trying to interpret what they’re seeing and more time engaging with it.
This has a direct effect on how a website performs. When content is easier to read and actions are easier to identify, users are more likely to stay, navigate, and convert.
A practical way to approach it
The easiest place to start is by testing your existing colour combinations. There are tools, such as WebAIMs colour contrast checker, that allow you to check contrast ratios against accessibility standards. Running your palette through these tools will highlight where issues exist and where adjustments are needed.
From there, changes can be made in a controlled way. Some will be straightforward. Others may require a more considered update to how colours are applied across your site. The important thing is understanding where the problems are and addressing them deliberately.
Final thought
Colour is an important part of how a brand is recognised, but it shouldn’t make a website harder to use. If users have to work to read your content, something isn’t working as it should.
Improving contrast is one of the more straightforward ways to make a website more accessible and easier to use. In some cases, that means small adjustments. In others, it requires rethinking how the brand is applied in a digital setting. Either way, the outcome is the same. A website that works better for the people using it.
If you’d like more help working out where colour contrast issues exist on your site, a full accessibility audit can identify exactly where changes may need to be made. Get in touch with us today to find out more.
