#0C182C

#0C182C

Color Values

HEX

#0C182C

RGB

12, 24, 44

HSL

217.5, 57.1%, 11.0%

HSV

217.5, 72.7%, 17.3%

CMYK

72.7%, 45.5%, 0.0%, 82.7%

OKLCH

0.2098 0.0435 260.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#0C182C

#2C200C

Analogous

#0C282C

#100C2C

#0C182C

Triadic

#0C182C

#2C0C18

#182C0C

Split Complementary

#0C182C

#2C100C

#282C0C

Tetradic

#0C182C

#2C0C28

#2C200C

#0C2C10

Color Blindness Simulation

Original

#0C182C

Protanopia

#111127

Deuteranopia

#101026

Tritanopia

#0D2322

Achromatopsia

#171717

CSS Usage

background-color: #0C182C;
color: #0C182C;
border-color: #0C182C;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F6FB
100
#E4EBF6
200
#C7D6F0
300
#9FB9E5
400
#6B93D7
500
#376DC8
600
#2C57A0
700
#234680
800
#1B3764
900
#182A49
950
#0F1B2E

Contrast Checker

Text on white

17.76:1

AA Pass AAA Pass

Text on black

1.18:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026