#15151D

#15151D

Color Values

HEX

#15151D

RGB

21, 21, 29

HSL

240.0, 16.0%, 9.8%

HSV

240.0, 27.6%, 11.4%

CMYK

27.6%, 27.6%, 0.0%, 88.6%

OKLCH

0.1996 0.0159 284.9

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#15151D

#1D1D15

Analogous

#15191D

#19151D

#15151D

Triadic

#15151D

#1D1515

#151D15

Split Complementary

#15151D

#1D1915

#191D15

Tetradic

#15151D

#1D1519

#1D1D15

#151D19

Color Blindness Simulation

Original

#15151D

Protanopia

#15151B

Deuteranopia

#15151B

Tritanopia

#151A19

Achromatopsia

#161616

CSS Usage

background-color: #15151D;
color: #15151D;
border-color: #15151D;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F6F6F8
100
#EBEBF0
200
#D6D6E1
300
#B8B8CC
400
#9292B0
500
#6B6B94
600
#565676
700
#45455F
800
#36364A
900
#292937
950
#1A1A23

Contrast Checker

Text on white

18.15:1

AA Pass AAA Pass

Text on black

1.16:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026