#12152F

#12152F

Color Values

HEX

#12152F

RGB

18, 21, 47

HSL

233.8, 44.6%, 12.7%

HSV

233.8, 61.7%, 18.4%

CMYK

61.7%, 55.3%, 0.0%, 81.6%

OKLCH

0.2087 0.0512 276.1

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#12152F

#2F2C12

Analogous

#12232F

#1D122F

#12152F

Triadic

#12152F

#2F1215

#152F12

Split Complementary

#12152F

#2F1D12

#232F12

Tetradic

#12152F

#2F1223

#2F2C12

#122F1D

Color Blindness Simulation

Original

#12152F

Protanopia

#131329

Deuteranopia

#131327

Tritanopia

#122423

Achromatopsia

#161616

CSS Usage

background-color: #12152F;
color: #12152F;
border-color: #12152F;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F5FA
100
#E6E8F4
200
#CBCFEB
300
#A7ACDD
400
#777FCB
500
#4752B8
600
#394293
700
#2D3576
800
#23295C
900
#1D2144
950
#12152B

Contrast Checker

Text on white

17.89:1

AA Pass AAA Pass

Text on black

1.17:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026