Colour Format Converter

Parse colour values, copy equivalent CSS formats, and test foreground/background accessibility contrast.

Input colour

Background colour

HEX

#2563EB

HEX8

#2563EBFF

RGB

rgb(37, 99, 235)

RGBA

rgba(37, 99, 235, 1)

HSL

hsl(221, 83%, 53%)

HSLA

hsla(221, 83%, 53%, 1)

HSV

hsv(221, 84%, 92%)

Name

No exact named colour

Contrast checker

Contrast ratio: 5.17:1

AA Normal PassAA Large PassAAA Normal FailAAA Large Pass

The quick brown fox jumps over the lazy dog.

Convert HEX, RGB, RGBA, HSL, and HSV values while checking WCAG contrast ratios.

Accepted input

Accepts structured text such as JSON, CSV, XML, or mixed conversion inputs depending on the selected workflow.

How to use

Open Colour Format Converter and paste, type, or upload the input it expects.
Adjust the available options until the preview or output reflects the workflow you need.
Use copy, download, or related follow-up tools once the result looks correct.

Tips

Pair it with other data tools from the same category when you need a broader workflow.
Pinned tools and recent history make it faster to return to repeated workflows.