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Colorbook
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Color Information

Blue

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

HEX Format
#218DCA
RGB Values
33, 141, 202
HSL Values
202°, 72%, 46%
CMYK Values
84%, 30%, 0%, 21%

Color Variations & Tints

  • #54AFE3

    Lightness: 61%

  • #3EA4E0

    Lightness: 56%

  • #289ADC

    Lightness: 51%

  • #218DCA

    Lightness: 46%

    Current color

  • #1D7DB4

    Lightness: 41%

  • #1A6D9E

    Lightness: 36%

  • #165E88

    Lightness: 31%

Accessibility

White Text
3.7
FAIL
Black Text
5.7
PASS
WCAG AA
PASS
WCAG AAA
FAIL

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 #218DCA

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

Current: #218DCA

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