Luminance
0.041
Category
Gray
Type
Dark
Best On
Color Codes
All color formats for your project
HEX
#393939393939RGB
rgb(57, 57, 57)R:57 G:57 B:57HSL
hsl(0, 0%, 22%)H:0° S:0% L:22%HSV / HSB
hsv(0, 0%, 22%)H:0° S:0% V:22%CMYK
cmyk(0%, 0%, 0%, 78%)C:0 M:0 Y:0 K:78LAB
lab(24, 0, 0)L:24 a:0 b:0OKLCH
oklch(34.5% 0.000 89.9)L:34.5% C:0.000 H:89.9°Code Formats
color: #393939;UIColor(red: 0.224, green: 0.224, blue: 0.224, alpha: 1.0)Color(0xFF393939)Color(0xFF393939)#FF393939Contrast Analysis
WCAG compliance with grayscale colors
On White
11.55:1
On Black
1.82:1
Grayscale Contrast
0%
1.8
Fail10%
1.5
Fail20%
1.1
Fail30%
1.4
Fail40%
2.0
Fail50%
2.9
Fail60%
4.1
AA-large70%
5.5
AA80%
7.2
AAA90%
9.2
AAA100%
11.5
AAABest Grayscale Contrast
#FFFFFF with ratio 11.55:1
Color Harmonies
Harmonious color combinations
complementary
Two colors opposite on the color wheel (180°)
split-complementary
Base color + two colors adjacent to its complement
triadic
Three colors evenly spaced (120° apart)
tetradic
Four colors evenly spaced (90° apart)
analogous
Three colors adjacent on the color wheel (30° apart)
Color Variations
Tints, shades, tones, and full scale
Color Scale (50-900)
50
100
200
300
400
500
600
700
800
900
Tints (Lighter)
Shades (Darker)
Tones (Desaturated)
Gradients (OKLCH)
Primary
90°linear-gradient(90deg, #6B6B6B 0%, #404040 100%)linear-gradient(90deg, oklch(52.8% 0.000 89.9) 0%, oklch(37.1% 0.000 89.9) 100%)Vibrant
135°linear-gradient(135deg, #5E4545 0%, #804D4D 100%)linear-gradient(135deg, oklch(41.8% 0.035 18.6) 0%, oklch(47.9% 0.069 19.9) 100%)Complementary
90°linear-gradient(90deg, #393939 0%, #383838 100%)linear-gradient(90deg, oklch(34.5% 0.000 89.9) 0%, oklch(34.1% 0.000 89.9) 100%)Analogous
90°linear-gradient(90deg, #383838 0%, #393939 50%, #383838 100%)linear-gradient(90deg, oklch(34.1% 0.000 89.9) 0%, oklch(34.5% 0.000 89.9) 50%, oklch(34.1% 0.000 89.9) 100%)Sunset
90°linear-gradient(90deg, #F6CE55 0%, #EE6C2B 50%, #E6193C 100%)linear-gradient(90deg, oklch(86.4% 0.144 90.6) 0%, oklch(68.0% 0.177 43.8) 50%, oklch(59.1% 0.228 21.2) 100%)Ocean
135°linear-gradient(135deg, #19A1E6 0%, #22C3B6 50%, #47D1A3 100%)linear-gradient(135deg, oklch(67.5% 0.146 238.9) 0%, oklch(73.8% 0.124 186.2) 50%, oklch(77.5% 0.136 166.9) 100%)Dark Mode
180°linear-gradient(180deg, #383838 0%, #251818 100%)linear-gradient(180deg, oklch(34.1% 0.000 89.9) 0%, oklch(22.6% 0.021 18.8) 100%)Radial Glow
Radialradial-gradient(circle, #5E5E5E 0%, #4D4D4D 100%)radial-gradient(circle, oklch(48.2% 0.000 89.9) 0%, oklch(42.0% 0.000 89.9) 100%)💡 About OKLCH Gradients
OKLCH (Oklch Color Space) provides perceptually uniform gradients with better color transitions than traditional RGB/HSL gradients. The format is oklch(L% C H) where L = Lightness (0-100%), C = Chroma (0-0.4), H = Hue (0-360°).
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