#121D23

#121D23

Color Values

HEX

#121D23

RGB

18, 29, 35

HSL

201.2, 32.1%, 10.4%

HSV

201.2, 48.6%, 13.7%

CMYK

48.6%, 17.1%, 0.0%, 86.3%

OKLCH

0.2231 0.0196 232.6

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#121D23

#231812

Analogous

#122321

#121523

#121D23

Triadic

#121D23

#23121D

#1D2312

Split Complementary

#121D23

#231215

#232112

Tetradic

#121D23

#211223

#231812

#152312

Color Blindness Simulation

Original

#121D23

Protanopia

#171722

Deuteranopia

#161521

Tritanopia

#132020

Achromatopsia

#1B1B1B

CSS Usage

background-color: #121D23;
color: #121D23;
border-color: #121D23;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F5F8F9
100
#E8EFF2
200
#D0DFE7
300
#AEC8D5
400
#82AABF
500
#578CA8
600
#457087
700
#37596C
800
#2B4654
900
#22353E
950
#162127

Contrast Checker

Text on white

17.13:1

AA Pass AAA Pass

Text on black

1.23:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026