#151D25

#151D25

Color Values

HEX

#151D25

RGB

21, 29, 37

HSL

210.0, 27.6%, 11.4%

HSV

210.0, 43.2%, 14.5%

CMYK

43.2%, 21.6%, 0.0%, 85.5%

OKLCH

0.2266 0.0196 248.7

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#151D25

#251D15

Analogous

#152525

#151525

#151D25

Triadic

#151D25

#25151D

#1D2515

Split Complementary

#151D25

#251515

#252515

Tetradic

#151D25

#251525

#251D15

#152515

Color Blindness Simulation

Original

#151D25

Protanopia

#181923

Deuteranopia

#181723

Tritanopia

#152221

Achromatopsia

#1C1C1C

CSS Usage

background-color: #151D25;
color: #151D25;
border-color: #151D25;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F6F7F9
100
#E9EDF1
200
#D1DBE5
300
#B1C2D3
400
#87A1BB
500
#5C80A3
600
#4A6682
700
#3B5268
800
#2E4051
900
#24303C
950
#171F26

Contrast Checker

Text on white

17.01:1

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