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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
#359CFD
RGB Values
53, 156, 253
HSL Values
209°, 98%, 60%
CMYK Values
79%, 38%, 0%, 1%

Color Variations & Tints

  • #81C1FE

    Lightness: 75%

  • #68B5FD

    Lightness: 70%

  • #4EA9FD

    Lightness: 65%

  • #359CFD

    Lightness: 60%

    Current color

  • #1C90FD

    Lightness: 55%

  • #0384FC

    Lightness: 50%

  • #0276E3

    Lightness: 45%

Accessibility

White Text
2.9
FAIL
Black Text
7.3
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 #359CFD

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

Current: #359CFD

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