#0C1C39

#0C1C39

Color Values

HEX

#0C1C39

RGB

12, 28, 57

HSL

218.7, 65.2%, 13.5%

HSV

218.7, 78.9%, 22.4%

CMYK

78.9%, 50.9%, 0.0%, 77.6%

OKLCH

0.2308 0.0602 261.2

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#0C1C39

#39290C

Analogous

#0C3239

#120C39

#0C1C39

Triadic

#0C1C39

#390C1C

#1C390C

Split Complementary

#0C1C39

#39120C

#32390C

Tetradic

#0C1C39

#390C32

#39290C

#0C3912

Color Blindness Simulation

Original

#0C1C39

Protanopia

#131332

Deuteranopia

#121130

Tritanopia

#0D2C2B

Achromatopsia

#1B1B1B

CSS Usage

background-color: #0C1C39;
color: #0C1C39;
border-color: #0C1C39;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F3F6FC
100
#E3EAF7
200
#C4D5F3
300
#9AB6EA
400
#638FDE
500
#2C67D3
600
#2353A9
700
#1C4287
800
#163469
900
#14284D
950
#0D1931

Contrast Checker

Text on white

16.92:1

AA Pass AAA Pass

Text on black

1.24:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026