/
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
#00278E
RGB Values
0, 39, 142
HSL Values
224°, 100%, 28%
CMYK Values
100%, 73%, 0%, 44%

Color Variations & Tints

  • #003ADB

    Lightness: 43%

  • #0034C2

    Lightness: 38%

  • #002DA8

    Lightness: 33%

  • #00278E

    Lightness: 28%

    Current color

  • #001F75

    Lightness: 23%

  • #00185C

    Lightness: 18%

  • #001242

    Lightness: 13%

Accessibility

White Text
12.5
PASS
Black Text
1.7
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 #00278E

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

Current: #00278E

Discover More Colors

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