/
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
#231D67
RGB Values
35, 29, 103
HSL Values
245°, 56%, 26%
CMYK Values
66%, 72%, 0%, 60%

Color Variations & Tints

  • #382EA3

    Lightness: 41%

  • #31288F

    Lightness: 36%

  • #2A237B

    Lightness: 31%

  • #231D67

    Lightness: 26%

    Current color

  • #1D1854

    Lightness: 21%

  • #161240

    Lightness: 16%

  • #0F0C2C

    Lightness: 11%

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 #231D67

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

Current: #231D67

Discover More Colors

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