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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
#1B235B
RGB Values
27, 35, 91
HSL Values
233°, 54%, 23%
CMYK Values
70%, 62%, 0%, 64%

Color Variations & Tints

  • #2D3995

    Lightness: 38%

  • #273182

    Lightness: 33%

  • #212A6E

    Lightness: 28%

  • #1B235B

    Lightness: 23%

    Current color

  • #151B47

    Lightness: 18%

  • #0F1333

    Lightness: 13%

  • #090C1F

    Lightness: 8%

Accessibility

White Text
14.6
PASS
Black Text
1.4
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 #1B235B

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

Current: #1B235B

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