#0000FF
Approximate name: Blue
Technical formats
Color-space values for scientific work and cross-device comparison.
Practical formats
Ready to paste into CSS, Tailwind, iOS, Android, Flutter, and more.
Color analysis
Objective metrics: luminance, hue, saturation, temperature, and contrast.
Nearest name
Blue
Relative luminance
0.072
Hue H
240°
Saturation S
100%
Lightness L
50%
Value V
100%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Blue
Contrast on white: 8.59:1 (AA body Pass / AAA Pass)
Contrast on black: 2.44:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#0000ff
Protanopia
#0000c1
Deuteranopia
#0000b3
Tritanopia
#009186
Achromatopsia
#1d1d1d
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.