Your Designer Sends HSL. Your CSS Needs HEX. Your Print Shop Wants CMYK.
Color is color, but every tool and every workflow uses a different format to represent it. Figma gives you HSL. Your CSS file wants HEX or RGB. The modern CSS spec uses space-separated syntax. Your print vendor needs CMYK. And somewhere in a game engine, someone needs the integer value. Converting between these manually means either memorizing formulas or Googling “HSL to HEX converter” for the thousandth time.
Color Format Converter Pro converts any color between 8 formats simultaneously. Paste in a HEX value, an RGB tuple, an HSL declaration — whatever you’ve got — and it auto-detects the format and shows you all 8 conversions with a live color swatch. One click copies any format to your clipboard.
All 8 Formats
- HEX (
#3B82F6) — the standard web color format that’s been around forever - RGB (
rgb(59, 130, 246)) — red, green, blue values from 0-255 - HSL (
hsl(217, 91%, 60%)) — hue, saturation, lightness; more intuitive for picking colors - HSV (
hsv(217, 76%, 96%)) — hue, saturation, value; what most design tool color pickers use internally - CMYK (
cmyk(76%, 47%, 0%, 4%)) — cyan, magenta, yellow, key; the print world’s format - CSS RGB modern (
rgb(59 130 246)) — the new space-separated CSS Color Level 4 syntax - CSS HSL modern (
hsl(217deg 91% 60%)) — modern CSS with degree notation - Integer (
3899126) — the color as a single number, used in some game engines and APIs
From Figma Swatch to Shipped Stylesheet
Say your designer drops a brand blue into a Figma comment as hsl(217, 91%, 60%) and asks you to wire it into the theme tokens. Your design tokens file wants HEX. The canvas chart library you’re using takes RGB tuples. And the new CSS reset someone added uses the space-separated Color Level 4 syntax. That’s three formats for one color, and none of them is the one you were handed.
Paste the HSL straight in. The tool reads it, figures out you gave it HSL without any dropdown to set, and lays out all 8 conversions next to a live swatch so you can confirm the blue actually looks like the blue you expected. HEX goes into the token, the RGB tuple goes into the chart config, the modern syntax goes into the reset. Three copy clicks and you’re done, and you never opened a formula.
It works the other direction too. Grab #3B82F6 off an existing stylesheet, drop it in, and you instantly see what hue and lightness it really is in HSL, which is far easier to reason about when you need a slightly darker hover state. Nudge the lightness in your head, type the new HSL, copy the HEX back out. The swatch updates as you go, so a typo that turns your blue muddy is obvious before it reaches a commit.
The auto-detect is the part that quietly saves the most time. You’re not stopping to tell it “this is RGB” or “this is HEX” every time you switch contexts. It reads the shape of what you pasted and responds. Bouncing between a JavaScript file full of rgb() calls and a CSS file full of hex codes stops being a context switch and becomes a paste.
Where the CMYK Numbers Hold Up and Where They Don’t
Web and app work lives in RGB-derived formats, and there the conversions are exact math: a HEX is just a packed RGB, HSL and HSV are reversible transforms of the same values, and the integer format is the same color expressed as one number that some game engines and color APIs expect. Round-trip any of those and you land back on the color you started with.
CMYK is the honest exception, and it’s worth knowing why. Screen color is additive light; print is subtractive ink on a physical surface. The tool runs the standard textbook formula, which gives you a sensible starting point and is genuinely useful for a quick proof or a digital mockup. But the real printed result depends on paper stock, ink profiles, and how the press is calibrated, none of which a formula can know. So treat the CMYK output as a draft. If files are going to an actual print shop, hand them the values, then verify against a physical proof before you commit to a run. For everything that stays on a screen, the numbers are solid.
That split is roughly who reaches for this. Front-end developers jumping between hex in stylesheets and RGB in canvas code. Designers carrying a color out of a Figma picker (which thinks in HSV) and into a codebase that thinks in HEX. Brand folks who need the same color written down in every notation a style guide demands. And anyone debugging an odd integer color value who just wants to see what it actually looks like.
The Number System Converter handles binary, octal, decimal, and hex conversions for numbers specifically. The Unit Converter Pro covers 12 categories of measurements.
Common Questions
Do I need to tell it what format I’m pasting?
No. It auto-detects. Paste #3B82F6, rgb(59, 130, 246), or hsl(217, 91%, 60%) — it figures out which one you’re using.
Does anything get sent to a server?
Nothing. All conversions happen in your browser. No color data leaves your device.
What about alpha/opacity support?
The tool handles the core color value across 8 formats. For opacity, you’d add the alpha channel separately in your CSS or design tool.
Free?
Completely. No sign-up, no restrictions.