#0A66C2

Cobalt

#0A66C2Cobalt

Luminance

0.135

Category

Blue

Type

Dark

Best On

#FFFFFF

Color Codes

All color formats for your project

HEX

HEX
#0A66C2
No #
0A66C2

RGB

RGB
rgb(10, 102, 194)
Values
R:10 G:102 B:194

HSL

HSL
hsl(210, 90%, 40%)
Values
H:210° S:90% L:40%

HSV / HSB

HSV
hsv(210, 95%, 76%)
Values
H:210° S:95% V:76%

CMYK

CMYK
cmyk(95%, 47%, 0%, 24%)
Values
C:95 M:47 Y:0 K:24

LAB

LAB
lab(43, 12, -55)
Values
L:43 a:12 b:-55

OKLCH

OKLCH
oklch(51.6% 0.163 254.7)
Values
L:51.6% C:0.163 H:254.7°

Code Formats

CSS
color: #0A66C2;
Swift
UIColor(red: 0.039, green: 0.400, blue: 0.761, alpha: 1.0)
Kotlin
Color(0xFF0A66C2)
Flutter
Color(0xFF0A66C2)
Android
#FF0A66C2

Contrast Analysis

WCAG compliance with grayscale colors

On White

5.69:1

AA

On Black

3.69:1

AA-large

Grayscale Contrast

Aa

0%

3.7

AA-large
Aa

10%

3.1

AA-large
Aa

20%

2.2

Fail
Aa

30%

1.5

Fail
Aa

40%

1.0

Fail
Aa

50%

1.4

Fail
Aa

60%

2.0

Fail
Aa

70%

2.7

Fail
Aa

80%

3.5

AA-large
Aa

90%

4.5

AA
Aa

100%

5.7

AA

Best Grayscale Contrast

#FFFFFF with ratio 5.69:1

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, #3D99F5 0%, #064079 100%)
OKLCH
linear-gradient(90deg, oklch(67.2% 0.161 251.6) 0%, oklch(37.2% 0.112 253.6) 100%)
Stops
0%
100%

Vibrant

135°
CSS
linear-gradient(135deg, #007FFF 0%, #0066CC 100%)
OKLCH
linear-gradient(135deg, oklch(61.3% 0.212 256.3) 0%, oklch(52.2% 0.177 255.8) 100%)
Stops
0%
100%

Complementary

90°
CSS
linear-gradient(90deg, #0A66C2 0%, #C2660A 100%)
OKLCH
linear-gradient(90deg, oklch(51.6% 0.163 254.7) 0%, oklch(60.6% 0.146 55.6) 100%)
Stops
0%
100%

Analogous

90°
CSS
linear-gradient(90deg, #0AC2C2 0%, #0A66C2 50%, #0A0AC2 100%)
OKLCH
linear-gradient(90deg, oklch(73.8% 0.125 194.8) 0%, oklch(51.6% 0.163 254.7) 50%, oklch(37.5% 0.250 265.3) 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, #0A66C2 0%, #0C1F31 100%)
OKLCH
linear-gradient(180deg, oklch(51.6% 0.163 254.7) 0%, oklch(23.3% 0.043 249.0) 100%)
Stops
0%
100%

Radial Glow

Radial
CSS
radial-gradient(circle, #258CF4 0%, #084C91 100%)
OKLCH
radial-gradient(circle, oklch(63.7% 0.180 253.2) 0%, oklch(41.9% 0.130 254.4) 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