#15181F

#15181F

Color Values

HEX

#15181F

RGB

21, 24, 31

HSL

222.0, 19.2%, 10.2%

HSV

222.0, 32.3%, 12.2%

CMYK

32.3%, 22.6%, 0.0%, 87.8%

OKLCH

0.2091 0.0147 266.9

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#15181F

#1F1C15

Analogous

#151D1F

#17151F

#15181F

Triadic

#15181F

#1F1518

#181F15

Split Complementary

#15181F

#1F1715

#1D1F15

Tetradic

#15181F

#1F151D

#1F1C15

#151F17

Color Blindness Simulation

Original

#15181F

Protanopia

#16161D

Deuteranopia

#16161D

Tritanopia

#151C1C

Achromatopsia

#181818

CSS Usage

background-color: #15181F;
color: #15181F;
border-color: #15181F;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F6F7F9
100
#EAECF0
200
#D4D9E2
300
#B6BDCE
400
#8F99B3
500
#677698
600
#525E7A
700
#424B61
800
#343B4C
900
#282D39
950
#191C24

Contrast Checker

Text on white

17.76:1

AA Pass AAA Pass

Text on black

1.18:1

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