#3F3F46

Charcoal

#3F3F46Charcoal

Luminance

0.051

Category

Gray

Type

Dark

Best On

#FFFFFF

Color Codes

All color formats for your project

HEX

HEX
#3F3F46
No #
3F3F46

RGB

RGB
rgb(63, 63, 70)
Values
R:63 G:63 B:70

HSL

HSL
hsl(240, 5%, 26%)
Values
H:240° S:5% L:26%

HSV / HSB

HSV
hsv(240, 10%, 27%)
Values
H:240° S:10% V:27%

CMYK

CMYK
cmyk(10%, 10%, 0%, 73%)
Values
C:10 M:10 Y:0 K:73

LAB

LAB
lab(27, 2, -4)
Values
L:27 a:2 b:-4

OKLCH

OKLCH
oklch(37.0% 0.012 285.8)
Values
L:37.0% C:0.012 H:285.8°

Code Formats

CSS
color: #3F3F46;
Swift
UIColor(red: 0.247, green: 0.247, blue: 0.275, alpha: 1.0)
Kotlin
Color(0xFF3F3F46)
Flutter
Color(0xFF3F3F46)
Android
#FF3F3F46

Contrast Analysis

WCAG compliance with grayscale colors

On White

10.44:1

AAA

On Black

2.01:1

Fail

Grayscale Contrast

Aa

0%

2.0

Fail
Aa

10%

1.7

Fail
Aa

20%

1.2

Fail
Aa

30%

1.2

Fail
Aa

40%

1.8

Fail
Aa

50%

2.6

Fail
Aa

60%

3.7

AA-large
Aa

70%

5.0

AA
Aa

80%

6.5

AA
Aa

90%

8.3

AAA
Aa

100%

10.4

AAA

Best Grayscale Contrast

#FFFFFF with ratio 10.44:1

Aa

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°
CSS
linear-gradient(90deg, #6F6F7B 0%, #3D3D43 100%)
OKLCH
linear-gradient(90deg, oklch(54.6% 0.018 285.8) 0%, oklch(36.2% 0.010 285.9) 100%)
Stops
0%
100%

Vibrant

135°
CSS
linear-gradient(135deg, #49496E 0%, #474785 100%)
OKLCH
linear-gradient(135deg, oklch(42.2% 0.061 283.5) 0%, oklch(42.9% 0.101 281.3) 100%)
Stops
0%
100%

Complementary

90°
CSS
linear-gradient(90deg, #3F3F46 0%, #46463F 100%)
OKLCH
linear-gradient(90deg, oklch(37.0% 0.012 285.8) 0%, oklch(39.2% 0.012 106.9) 100%)
Stops
0%
100%

Analogous

90°
CSS
linear-gradient(90deg, #3F4246 0%, #3F3F46 50%, #423F46 100%)
OKLCH
linear-gradient(90deg, oklch(37.8% 0.008 255.5) 0%, oklch(37.0% 0.012 285.8) 50%, oklch(37.3% 0.012 305.1) 100%)
Stops
0%
50%
100%

Sunset

90°
CSS
linear-gradient(90deg, #F6CE55 0%, #EE6C2B 50%, #E6193C 100%)
OKLCH
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%)
Stops
0%
50%
100%

Ocean

135°
CSS
linear-gradient(135deg, #19A1E6 0%, #22C3B6 50%, #47D1A3 100%)
OKLCH
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%)
Stops
0%
50%
100%

Dark Mode

180°
CSS
linear-gradient(180deg, #3F3F46 0%, #181825 100%)
OKLCH
linear-gradient(180deg, oklch(37.0% 0.012 285.8) 0%, oklch(21.6% 0.025 284.1) 100%)
Stops
0%
100%

Radial Glow

Radial
CSS
radial-gradient(circle, #63636E 0%, #494950 100%)
OKLCH
radial-gradient(circle, oklch(50.4% 0.017 285.8) 0%, oklch(40.8% 0.012 285.9) 100%)
Stops
0%
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°).

Generate Full Palette

Create a complete brand palette from this color with primary, secondary, accent, and neutral scales.

View Palette