/
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
#251F61
RGB Values
37, 31, 97
HSL Values
245°, 52%, 25%
CMYK Values
62%, 68%, 0%, 62%

Color Variations & Tints

  • #3A319B

    Lightness: 40%

  • #332B88

    Lightness: 35%

  • #2B2574

    Lightness: 30%

  • #251F61

    Lightness: 25%

    Current color

  • #1D184E

    Lightness: 20%

  • #16123A

    Lightness: 15%

  • #0E0C27

    Lightness: 10%

Accessibility

White Text
14.5
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 #251F61

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

Current: #251F61

Discover More Colors

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