#15212C

#15212C

Color Values

HEX

#15212C

RGB

21, 33, 44

HSL

208.7, 35.4%, 12.7%

HSV

208.7, 52.3%, 17.3%

CMYK

52.3%, 25.0%, 0.0%, 82.7%

OKLCH

0.242 0.0271 246.8

Properties

Cool Dark Nearest: RAL 5008 Grey Blue

Color Harmonies

Complementary

#15212C

#2C2015

Analogous

#152C2B

#15152C

#15212C

Triadic

#15212C

#2C1521

#212C15

Split Complementary

#15212C

#2C1515

#2C2B15

Tetradic

#15212C

#2B152C

#2C2015

#152C15

Color Blindness Simulation

Original

#15212C

Protanopia

#1A1A29

Deuteranopia

#1A1929

Tritanopia

#162727

Achromatopsia

#1F1F1F

CSS Usage

background-color: #15212C;
color: #15212C;
border-color: #15212C;
Nearest Tailwind: Gray 800 #1F2937

Tailwind Shades

50
#F5F7FA
100
#E8EDF3
200
#CFDCE8
300
#ACC3D7
400
#7FA2C2
500
#5281AD
600
#42688A
700
#35536E
800
#294156
900
#213140
950
#151F28

Contrast Checker

Text on white

16.33:1

AA Pass AAA Pass

Text on black

1.29:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

ก.พ. 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

ก.พ. 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

ก.พ. 19, 2026