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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
#1F10D8
RGB Values
31, 16, 216
HSL Values
245°, 86%, 45%
CMYK Values
86%, 93%, 0%, 15%

Color Variations & Tints

  • #5041F1

    Lightness: 60%

  • #3A2AEF

    Lightness: 55%

  • #2412ED

    Lightness: 50%

  • #1F10D8

    Lightness: 45%

    Current color

  • #1D0EBE

    Lightness: 40%

  • #190CA6

    Lightness: 35%

  • #160B8E

    Lightness: 30%

Accessibility

White Text
9.9
PASS
Black Text
2.1
FAIL
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 #1F10D8

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

Current: #1F10D8

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