#1F151B

#1F151B

Color Values

HEX

#1F151B

RGB

31, 21, 27

HSL

324.0, 19.2%, 10.2%

HSV

324.0, 32.3%, 12.2%

CMYK

0.0%, 32.3%, 12.9%, 87.8%

OKLCH

0.211 0.0196 342.2

Properties

Warm Dark Nearest: RAL 5011 Steel Blue

Color Harmonies

Complementary

#1F151B

#151F19

Analogous

#1E151F

#1F1516

#1F151B

Triadic

#1F151B

#1B1F15

#151B1F

Split Complementary

#1F151B

#161F15

#151F1E

Tetradic

#1F151B

#1F1E15

#151F19

#15161F

Color Blindness Simulation

Original

#1F151B

Protanopia

#1B1B1A

Deuteranopia

#1B1C19

Tritanopia

#1E1818

Achromatopsia

#181818

CSS Usage

background-color: #1F151B;
color: #1F151B;
border-color: #1F151B;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F9F6F8
100
#F0EAEE
200
#E2D4DD
300
#CEB6C4
400
#B38FA4
500
#986784
600
#7A526A
700
#614255
800
#4C3442
900
#392832
950
#241920

Contrast Checker

Text on white

17.78:1

AA Pass AAA Pass

Text on black

1.18:1

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