#152129

#152129

Color Values

HEX

#152129

RGB

21, 33, 41

HSL

204.0, 32.3%, 12.2%

HSV

204.0, 48.8%, 16.1%

CMYK

48.8%, 19.5%, 0.0%, 83.9%

OKLCH

0.2403 0.0228 238.1

Properties

Cool Dark Nearest: RAL 7021 Black Grey

Color Harmonies

Complementary

#152129

#291D15

Analogous

#152927

#151729

#152129

Triadic

#152129

#291521

#212915

Split Complementary

#152129

#291517

#292715

Tetradic

#152129

#271529

#291D15

#172915

Color Blindness Simulation

Original

#152129

Protanopia

#1A1A27

Deuteranopia

#1A1927

Tritanopia

#162625

Achromatopsia

#1F1F1F

CSS Usage

background-color: #152129;
color: #152129;
border-color: #152129;
Nearest Tailwind: Gray 800 #1F2937

Tailwind Shades

50
#F5F8F9
100
#E8EEF2
200
#D0DEE7
300
#AEC6D6
400
#82A7BF
500
#5688A9
600
#456D87
700
#37576C
800
#2B4454
900
#22333F
950
#162027

Contrast Checker

Text on white

16.39:1

AA Pass AAA Pass

Text on black

1.28:1

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