#2F577F
Approximate name: Dark Slate 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
DarkSlateBlue
Relative luminance
0.09
Hue H
210°
Saturation S
46%
Lightness L
34%
Value V
50%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Blue
Contrast on white: 7.53:1 (AA body Pass / AAA Pass)
Contrast on black: 2.79:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#2f577f
Protanopia
#404175
Deuteranopia
#3e3b73
Tritanopia
#316e6c
Achromatopsia
#505050
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.