Designing an accessible website for colour-blind people involves several key considerations to ensure that all users can effectively interact with your site. Here’s a comprehensive guide based on the information gathered from Equalise Digital, Accessi.org, and HostAdvice:

Prioritise Colour Contrast: Ensuring proper colour contrast is crucial for colour-blind users. Colours like red/green or blue/yellow may be difficult to distinguish if they don’t have enough contrast. Tools like WebAIM’s colour contrast verifier or Adobe’s accessible color palette generator can be used to check if your website is colour blind safe.

Avoid Colour Dependence: It’s essential not to rely solely on colour to convey meaning. This applies to elements like graphs, charts, icons, and buttons. For data visualisations, incorporating both colour and patterns on elements such as graphs can make them more accessible.

Use Patterns and Textures: Patterns and textures can aid in differentiating elements, especially in areas where color alone might be misleading. However, they should be used sparingly to avoid confusion.

Font and Interface Adjustments: Enabling manual font adjustments can significantly help those with visual impairments. Limiting the colour palette in the interface and using explicit and descriptive labels for links and buttons can also enhance accessibility.

Keyboard Accessibility: Providing keyboard shortcuts can greatly benefit users with visual impairments, as navigating with a mouse might be challenging for them.

Avoid Certain Colour Combinations: Some colour combinations can be particularly problematic for color-blind users, such as green/blue, green/red, and blue/purple. It’s advisable to avoid these combinations to ensure better accessibility.

Web Accessibility Tools: Utilising tools like colour blindness simulators and colour contrast checkers can help in designing websites that are accessible to colour-blind users. Following the Web Content Accessibility Guidelines (WCAG) is also recommended.

In essence, designing for colour-blind users involves a careful selection of colours, patterns, and tools that enhance the visibility and functionality of the website for everyone. By implementing these strategies, you can ensure that your website is inclusive and accessible to a wider audience.