#12151B

#12151B

Color Values

HEX

#12151B

RGB

18, 21, 27

HSL

220.0, 20.0%, 8.8%

HSV

220.0, 33.3%, 10.6%

CMYK

33.3%, 22.2%, 0.0%, 89.4%

OKLCH

0.1953 0.013 264.2

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#12151B

#1B1812

Analogous

#12191B

#13121B

#12151B

Triadic

#12151B

#1B1215

#151B12

Split Complementary

#12151B

#1B1312

#191B12

Tetradic

#12151B

#1B1219

#1B1812

#121B13

Color Blindness Simulation

Original

#12151B

Protanopia

#13131A

Deuteranopia

#131319

Tritanopia

#121818

Achromatopsia

#151515

CSS Usage

background-color: #12151B;
color: #12151B;
border-color: #12151B;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F6F7F9
100
#EAECF0
200
#D4D9E2
300
#B6BECE
400
#8E9AB4
500
#667799
600
#525F7A
700
#414C62
800
#333C4D
900
#282E39
950
#191D24

Contrast Checker

Text on white

18.28:1

AA Pass AAA Pass

Text on black

1.15:1

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