Use this color calculation to reproduce a defined sRGB compositing, blending, luminance, or accessibility-contrast operation with explicit color inputs.

Start color

A three- or six-digit hexadecimal sRGB color.

End color

A three- or six-digit hexadecimal sRGB color.

Amount

Blend position between the colors; zero returns the start color and one the end color.

Blend two hexadecimal sRGB colors by interpolating their channels. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Blended color

Blended sRGB color in hexadecimal notation.

• Results depend on color space, transfer function, alpha convention, rounding, display profile, and the precise accessibility formula. Numeric contrast does not by itself establish readability for every user or interface state.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Verify the color-space and alpha assumptions, inspect the rendered result, and test relevant foreground, background, hover, disabled, and focus states. Pair contrast checks with broader accessibility review.

• Delta E 76 Color Difference

  Compute the CIE76 (Delta E 1976) difference between two sRGB hex colors via CIELAB.

• Contrast Ratio Calculator

  Compute WCAG contrast ratio between two luminance values.

• Alpha Compositing Calculator

  Composite a source color over a backdrop color with straight-alpha source-over blending.