Random Color Generator

What Random Color Generator does

This tool creates a single random color based on your constraints. You can choose between RGB and HSL modes. In RGB mode, you can lock any of the red, green, or blue channels to a fixed value (0–255). In HSL mode, you can lock hue (0–360), saturation (0–100), or lightness (0–100). Unlocked channels are filled with random values within their valid ranges.

Worked example

How the color is calculated

For each unlocked channel, the tool uses a cryptographically secure random number generator to pick a value within the channel's allowed range. Locked channels keep the value you entered after clamping it to the valid range. The resulting RGB or HSL values are then converted to the other formats for display.

Practical uses

• Create design tokens, chart series, or illustration palettes with specific constraints.
• Generate a random accent color while keeping saturation or lightness consistent.
• Use the generated color as a starting point for further adjustments.

Limitations and checks

• Random colors are not guaranteed to have readable contrast with any background. Always test WCAG contrast for text and background pairs.
• Different screens and color profiles may render the same numeric color differently.
• Conversions between color models can introduce rounding differences of one unit.

Frequently asked questions

Why does the converted value differ slightly from the original?

HEX and RGB use integer channels, while HSL and HSV often require rounding when converting. This can cause a difference of one unit in some channels.

Are the random colors truly random?

Yes, the tool uses a cryptographically secure random number generator, so each generation is independent and unpredictable.

Can I generate multiple colors at once?

No, this tool generates one color per click. You can click the generate button repeatedly to get more colors.