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Color Models: HEX, RGB, HSL, CMYK — Complete Guide

7 min read

2026-03-04

The difference between color models and how to convert colors between formats.

Color Models

HEX

Hexadecimal notation: #RRGGBB. Used in CSS and web design.

RGB

Red, Green, Blue — 3 channels from 0 to 255. rgb(255, 0, 0) = red.

HSL

Hue, Saturation, Lightness. Convenient for designers.

CMYK

Cyan, Magenta, Yellow, Key (black). For printing and publishing.

When to Use Which

ModelApplication
HEXCSS, web design
RGBScreen graphics
HSLChoosing shades
CMYKPrinting

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See also: Palette Generator, Gradient Generator, Contrast Checker

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