#15151F

#15151F

Color Values

HEX

#15151F

RGB

21, 21, 31

HSL

240.0, 19.2%, 10.2%

HSV

240.0, 32.3%, 12.2%

CMYK

32.3%, 32.3%, 0.0%, 87.8%

OKLCH

0.2007 0.0199 284.5

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#15151F

#1F1F15

Analogous

#151A1F

#1A151F

#15151F

Triadic

#15151F

#1F1515

#151F15

Split Complementary

#15151F

#1F1A15

#1A1F15

Tetradic

#15151F

#1F151A

#1F1F15

#151F1A

Color Blindness Simulation

Original

#15151F

Protanopia

#15151D

Deuteranopia

#15151C

Tritanopia

#151B1A

Achromatopsia

#161616

CSS Usage

background-color: #15151F;
color: #15151F;
border-color: #15151F;
Nearest Tailwind: Gray 900 #111827

Tailwind Shades

50
#F6F6F9
100
#EAEAF0
200
#D4D4E2
300
#B6B6CE
400
#8F8FB3
500
#676798
600
#52527A
700
#424261
800
#34344C
900
#282839
950
#191924

Contrast Checker

Text on white

18.12:1

AA Pass AAA Pass

Text on black

1.16:1

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