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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
#3988B4
RGB Values
57, 136, 180
HSL Values
201°, 52%, 46%
CMYK Values
68%, 24%, 0%, 29%

Color Variations & Tints

  • #68ABCF

    Lightness: 61%

  • #54A0C9

    Lightness: 56%

  • #4196C3

    Lightness: 51%

  • #3988B4

    Lightness: 46%

    Current color

  • #32799F

    Lightness: 41%

  • #2C6A8C

    Lightness: 36%

  • #265B78

    Lightness: 31%

Accessibility

White Text
3.9
FAIL
Black Text
5.4
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 #3988B4

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

Current: #3988B4

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