#181720

#181720

Color Values

HEX

#181720

RGB

24, 23, 32

HSL

246.7, 16.4%, 10.8%

HSV

246.7, 28.1%, 12.5%

CMYK

25.0%, 28.1%, 0.0%, 87.5%

OKLCH

0.21 0.0177 289.9

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#181720

#1F2017

Analogous

#171B20

#1D1720

#181720

Triadic

#181720

#201817

#172018

Split Complementary

#181720

#201D17

#1B2017

Tetradic

#181720

#20171B

#1F2017

#17201D

Color Blindness Simulation

Original

#181720

Protanopia

#18181E

Deuteranopia

#18181D

Tritanopia

#181C1C

Achromatopsia

#181818

CSS Usage

background-color: #181720;
color: #181720;
border-color: #181720;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F7F6F8
100
#EBEBF0
200
#D7D5E1
300
#BAB8CC
400
#9591B0
500
#6F6B94
600
#595577
700
#47445F
800
#38354A
900
#2B2938
950
#1B1A23

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

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