/
Colorbook
Sign in Sign up

Color Information

Blue

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#3943DD
RGB Values
57, 67, 221
HSL Values
236°, 71%, 55%
CMYK Values
74%, 70%, 0%, 13%

Color Variations & Tints

  • #7C83E9

    Lightness: 70%

  • #666FE5

    Lightness: 65%

  • #515AE1

    Lightness: 60%

  • #3943DD

    Lightness: 55%

    Current color

  • #2531DA

    Lightness: 50%

  • #212CC4

    Lightness: 45%

  • #1E27AE

    Lightness: 40%

Accessibility

White Text
7.0
PASS
Black Text
3.0
FAIL
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 #3943DD

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

Current: #3943DD

Discover More Colors

Explore a randomly curated selection of colors. Each refresh brings new inspiration for your palette.