/
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
#1B57A4
RGB Values
27, 87, 164
HSL Values
214°, 72%, 37%
CMYK Values
84%, 47%, 0%, 36%

Color Variations & Tints

  • #2C79DD

    Lightness: 52%

  • #226CCE

    Lightness: 47%

  • #1E61B8

    Lightness: 42%

  • #1B57A4

    Lightness: 37%

    Current color

  • #174A8C

    Lightness: 32%

  • #133E76

    Lightness: 27%

  • #103360

    Lightness: 22%

Accessibility

White Text
7.1
PASS
Black Text
2.9
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 #1B57A4

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

Current: #1B57A4

Discover More Colors

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