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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
#1D21B7
RGB Values
29, 33, 183
HSL Values
238°, 73%, 42%
CMYK Values
84%, 82%, 0%, 28%

Color Variations & Tints

  • #4147E1

    Lightness: 57%

  • #2B31DE

    Lightness: 52%

  • #2026CF

    Lightness: 47%

  • #1D21B7

    Lightness: 42%

    Current color

  • #191EA3

    Lightness: 37%

  • #161A8D

    Lightness: 32%

  • #131677

    Lightness: 27%

Accessibility

White Text
10.7
PASS
Black Text
2.0
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 #1D21B7

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

Current: #1D21B7

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