#151D22

#151D22

Color Values

HEX

#151D22

RGB

21, 29, 34

HSL

203.1, 23.6%, 10.8%

HSV

203.1, 38.2%, 13.3%

CMYK

38.2%, 14.7%, 0.0%, 86.7%

OKLCH

0.2251 0.0152 235.8

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#151D22

#221A15

Analogous

#152221

#151722

#151D22

Triadic

#151D22

#22151D

#1D2215

Split Complementary

#151D22

#221517

#222115

Tetradic

#151D22

#211522

#221A15

#172215

Color Blindness Simulation

Original

#151D22

Protanopia

#181921

Deuteranopia

#181720

Tritanopia

#152020

Achromatopsia

#1C1C1C

CSS Usage

background-color: #151D22;
color: #151D22;
border-color: #151D22;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F6F8F9
100
#EAEEF1
200
#D3DDE4
300
#B3C5D0
400
#8AA6B7
500
#61869E
600
#4E6C7E
700
#3E5665
800
#31434F
900
#26333B
950
#182025

Contrast Checker

Text on white

17.06:1

AA Pass AAA Pass

Text on black

1.23:1

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