/
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
#0100D3
RGB Values
1, 0, 211
HSL Values
240°, 100%, 41%
CMYK Values
100%, 100%, 0%, 17%

Color Variations & Tints

  • #1F1FFF

    Lightness: 56%

  • #0505FF

    Lightness: 51%

  • #0000EB

    Lightness: 46%

  • #0100D3

    Lightness: 41%

    Current color

  • #0000B8

    Lightness: 36%

  • #00009E

    Lightness: 31%

  • #000085

    Lightness: 26%

Accessibility

White Text
10.8
PASS
Black Text
1.9
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 #0100D3

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

Current: #0100D3

Discover More Colors

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