#121C17

#121C17

Color Values

HEX

#121C17

RGB

18, 28, 23

HSL

150.0, 21.7%, 9.0%

HSV

150.0, 35.7%, 11.0%

CMYK

35.7%, 0.0%, 17.9%, 89.0%

OKLCH

0.2148 0.0175 162.8

Properties

Cool Dark Nearest: RAL 9011 Graphite Black

Color Harmonies

Complementary

#121C17

#1C1217

Analogous

#121C12

#121C1C

#121C17

Triadic

#121C17

#17121C

#1C1712

Split Complementary

#121C17

#1C121C

#1C1212

Tetradic

#121C17

#12121C

#1C1217

#1C1C12

Color Blindness Simulation

Original

#121C17

Protanopia

#161618

Deuteranopia

#161518

Tritanopia

#121919

Achromatopsia

#1A1A1A

CSS Usage

background-color: #121C17;
color: #121C17;
border-color: #121C17;
Nearest Tailwind: Neutral 900 #171717

Tailwind Shades

50
#F6F9F7
100
#EAF0ED
200
#D4E3DB
300
#B5CFC2
400
#8CB5A1
500
#649B80
600
#507C66
700
#406352
800
#324E40
900
#273A30
950
#19251F

Contrast Checker

Text on white

17.44:1

AA Pass AAA Pass

Text on black

1.2:1

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