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Color converter and contrast checker

Translate opaque sRGB colors and inspect an explicit contrast comparison.

Input

HEX: #RGB or #RRGGBB. RGB: rgb(12, 34, 56) or 12, 34, 56. HSL: hsl(210, 50%, 40%) or 210, 50%, 40%.

Leave blank for white (#ffffff). Only opaque #RGB or #RRGGBB values are accepted.

Output

Ready. Nothing is saved automatically.
Work through the task
Translate supported opaque sRGB colors and inspect a selected contrast comparison.
  1. Enter a supported HEX/RGB/HSL color and choose the output representation.
  2. If checking contrast, supply the intended background explicitly. Read the reported values and limitations together.
  3. Review the result before copying or downloading. Editing an input invalidates the previous result; keep an original if the transformation matters.
Example to check
Opaque black is #000000. Selecting a background adds a comparison rather than changing the source color.
Limits and output behavior
The documented opaque color syntax and ranges are checked. This is a numeric color/contrast tool, not a complete accessibility audit of typography, layout or an interface.
Troubleshooting
Select a supported opaque HEX/RGB/HSL representation and correct its numeric ranges. Contrast needs the intended background; an alpha color is outside the stated opaque syntax.
Questions
Is the contrast number a complete accessibility audit?
No. It is a color comparison. Typography, content, states, layout and interaction accessibility require separate review.
Input and privacy
Processing runs in this browser. Inputs are not saved automatically. An explicitly chosen local draft, where offered, is plaintext storage on this device. Downloaded files, clipboard contents and browser extensions have separate retention behavior.