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Color Blindness Simulator

Color

Simulate how colors appear to people with different types of color vision deficiency.

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Color Blindness Simulator

See how colors appear with different types of color blindness

Preset Colors

Original Color

HEX: #3498DB

RGB: 52, 152, 219

Simulated Views

Protanopia

Red-blind (no red cones)

Deuteranopia

Green-blind (no green cones)

Tritanopia

Blue-blind (no blue cones)

Side-by-Side Comparison
Original
Protanopia
Deuteranopia
Tritanopia
Test Gradient
OriginalSimulated

How to use the Color Blindness Simulator

Color Blindness Simulator eliminates the need to memorise colour format conversions. Open the page, enter any colour (HEX, RGB, HSL, or named), and the tool shows you all representations at once. The live preview swatch confirms you have the right colour, and the contrast checker helps you make accessibility-informed decisions before you commit the value to your stylesheet.

Why use the Color Blindness Simulator

Color Blindness Simulator is the fastest way to check whether a colour choice is accessible. The WCAG contrast indicator updates as you adjust the colour, showing you the pass/fail status against white and black backgrounds. This immediate feedback loop helps you catch low-contrast combinations before they reach your users.

When to use Color Blindness Simulator

Color Blindness Simulator is ideal for branding projects where you need to maintain colour consistency across web, print, and social media assets. Convert the brand palette between HEX, RGB, and HSL formats, ensure every channel uses the exact same colour values, and document the results for the rest of the team.

Key features of Color Blindness Simulator

Color Blindness Simulator gives you every colour format at once — HEX, RGB, HSL — with accurate WCAG contrast checks against light and dark backgrounds. Pick a colour visually or type a value, and all representations update simultaneously for instant comparison.

Common use cases for Color Blindness Simulator

Color Blindness Simulator is used when: a frontend developer converts the HEX values from a Figma design file into HSL for a Tailwind CSS configuration; a designer checks whether light text on a coloured background meets WCAG AA accessibility standards; and a branding manager documents the exact RGB equivalents of a company's HEX brand palette for print use.

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Related reading

Quick answers for Color Blindness Simulator

What does the Color Blindness Simulator do?
Simulate how colors appear to people with different types of color vision deficiency. The Color Blindness Simulator is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Color Blindness Simulator?
Open the Color Blindness Simulator on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the Color Blindness Simulator free to use?
Yes. The Color Blindness Simulator is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the Color Blindness Simulator safe and private?
Yes. The Color Blindness Simulator processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What kind of output does the Color Blindness Simulator produce?
The Color Blindness Simulator produces clean, formatted output that you can copy or download with a single click. The output is tailored to the tool's purpose — formatted code, converted data, transformed text, or processed media — and is ready for immediate use in your project or workflow.
Does the Color Blindness Simulator work on mobile devices?
Yes. The Color Blindness Simulator is designed to work on any device with a modern browser, including phones and tablets. The interface adapts to smaller screens, and the core functionality — paste input, transform, copy output — works the same way regardless of your device.
What color formats does the Color Blindness Simulator support?
The Color Blindness Simulator works with the formats web developers reach for every day - HEX, RGB / RGBA, and HSL. You can copy any value with one click for use in CSS, design tools, or code.
Can I pick a colour visually with the Color Blindness Simulator, or do I need to type values?
The Color Blindness Simulator supports both approaches. You can type colour values directly in any format (HEX, RGB, HSL), or click the colour swatch to open your system's native colour picker for visual selection. The tool converts between formats regardless of which input method you use.
Can I use the Color Blindness Simulator offline?
Once the page has loaded, the Color Blindness Simulator continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.