#312ED1
Approximate name: Royal 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
RoyalBlue
Relative luminance
0.072
Hue H
241°
Saturation S
64%
Lightness L
50%
Value V
82%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Blue
Contrast on white: 8.60:1 (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
#312ed1
Protanopia
#3030aa
Deuteranopia
#3030a0
Tritanopia
#318a84
Achromatopsia
#414141
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.