Color Converter & Picker
Convert colors between HEX, RGB, HSL, HSV, and CMYK formats. Includes a color picker and shade preview.
Pick, convert, and inspect colors across HEX, RGB, HSL, and CSS named values
Designers and developers constantly translate colors between HEX (`#3B82F6`), RGB (`rgb(59, 130, 246)`), HSL, and named values. This tool converts between all of those representations, lets you pick a color visually, and previews how it looks against light and dark backgrounds. Use it when matching brand colors, debugging accessibility contrast, or dropping a value into a Tailwind config or design token system.
- Pick a color from the picker, or paste any HEX, RGB, or HSL value.
- Read the equivalent values for every other format. Copy the one your toolchain wants.
- Use the contrast preview to confirm legibility on light and dark surfaces, especially for body text.
- Save the chosen color into your design tokens or stylesheet to keep usage consistent.
Color conversion pages have broader intent than they seem
Developers and designers rarely need only one color value. They move between HEX, RGB, HSL, CSS named colors, alpha channels, and contrast checks while building themes, design tokens, charts, and UI states.
That means the page can usefully explain why different color models exist. HSL is often easier for procedural theming, HEX is common for handoff and static tokens, and RGB or RGBA fit browser APIs and rendering workflows well.
Accessibility matters more than visual taste alone
Production color problems are often about legibility and meaning, not aesthetics. Button text can fail contrast requirements, semantic colors can become inconsistent across themes, and dark mode can distort values that looked fine on a white canvas.
Supporting text about WCAG contrast, semantic token naming, and success/warning/error color usage gives the page much stronger practical value and makes it useful for real implementation work.
Best use cases
- Matching brand colors across web, mobile, and marketing assets.
- Translating colors between design tools (Figma, Sketch) and CSS or SwiftUI.
- Auditing accessibility contrast against WCAG AA and AAA thresholds.
Common mistakes to avoid
- Different sRGB profiles render the same HEX value slightly differently. Stick to one source of truth in your design system.
- Three-digit HEX (`#abc`) is shorthand for `#aabbcc`. Avoid the shorthand in design tokens to keep grepping easy.
- HSL is intuitive for humans, but rounding to integer percentages can shift a color enough to fail contrast checks.
How this tool works
- Implementation
- Project TypeScript conversions for HEX, RGB, HSL, HSV, CMYK, contrast, and palette calculations
- Data path
- Input is processed in the current browser tab. Tool input is not submitted to a DevHelper Tools application server.
- Independent check
- Check gamut, alpha handling, and WCAG contrast in the final browser and visual context.
Verify before production use
A successful conversion or generated snippet is not proof that it matches your runtime. Check the output against an independent implementation, test one known edge case, and record the environment or standard version you validated.
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FAQ
Does the tool support alpha?
Yes. Hex with eight digits and `rgba`/`hsla` syntax preserve the alpha channel during conversion.
How do I check accessibility contrast?
Use the contrast preview area to compare foreground and background colors. WCAG AA requires 4.5:1 for body text, 3:1 for large text.
Is the picker color-managed?
It uses the browser`s native color picker, which is sRGB. For wide-gamut workflows, double-check values in your design tool.