#181123

#181123

Color Values

HEX

#181123

RGB

24, 17, 35

HSL

263.3, 34.6%, 10.2%

HSV

263.3, 51.4%, 13.7%

CMYK

31.4%, 51.4%, 0.0%, 86.3%

OKLCH

0.1962 0.0365 301.0

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#181123

#1C2311

Analogous

#111323

#211123

#181123

Triadic

#181123

#231811

#112318

Split Complementary

#181123

#232111

#132311

Tetradic

#181123

#231113

#1C2311

#112321

Color Blindness Simulation

Original

#181123

Protanopia

#15151F

Deuteranopia

#15161E

Tritanopia

#181B1A

Achromatopsia

#141414

CSS Usage

background-color: #181123;
color: #181123;
border-color: #181123;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F7F5FA
100
#ECE8F2
200
#D9CFE8
300
#BDADD7
400
#9980C1
500
#7653AC
600
#5E4389
700
#4B356E
800
#3B2A56
900
#2D2140
950
#1C1528

Contrast Checker

Text on white

18.37:1

AA Pass AAA Pass

Text on black

1.14:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026