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Colorbook
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Color Information

Yellow

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#EFFB51
RGB Values
239, 251, 81
HSL Values
64°, 96%, 65%
CMYK Values
5%, 0%, 68%, 2%

Color Variations & Tints

  • #F6FD9B

    Lightness: 80%

  • #F4FC82

    Lightness: 75%

  • #F2FC69

    Lightness: 70%

  • #EFFB51

    Lightness: 65%

    Current color

  • #EEFB37

    Lightness: 60%

  • #ECFA1E

    Lightness: 55%

  • #EAFA05

    Lightness: 50%

Accessibility

White Text
1.1
FAIL
Black Text
18.6
PASS
WCAG AA
PASS
WCAG AAA
PASS

Accessibility Guide

Contrast Ratios
Higher values (4.5+) ensure better readability for users with visual impairments.
WCAG AA Standard
Minimum requirement: 4.5:1 contrast for normal text, 3:1 for large text.
WCAG AAA Standard
Enhanced level: 7:1 contrast for normal text, 4.5:1 for large text.

Color Harmonies

  • Complementary

    Colors opposite on the color wheel, creating high contrast

  • Triadic

    Three evenly spaced colors forming a triangle on the color wheel

  • Analogous

    Adjacent colors on the color wheel, creating harmony and unity

Be picky and fine tune your color: colors very near to #EFFB51

Systematic progression of extremely similar colors. Each color represents a precise step in lightness variation.

Current: #EFFB51

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