/
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
#3F8ADE
RGB Values
63, 138, 222
HSL Values
212°, 71%, 56%
CMYK Values
72%, 38%, 0%, 13%

Color Variations & Tints

  • #81B2EA

    Lightness: 71%

  • #6BA4E6

    Lightness: 66%

  • #5597E2

    Lightness: 61%

  • #3F8ADE

    Lightness: 56%

    Current color

  • #297CDB

    Lightness: 51%

  • #2270C9

    Lightness: 46%

  • #1E64B3

    Lightness: 41%

Accessibility

White Text
3.6
FAIL
Black Text
5.9
PASS
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 #3F8ADE

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

Current: #3F8ADE

Discover More Colors

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