#181C31

#181C31

Color Values

HEX

#181C31

RGB

24, 28, 49

HSL

230.4, 34.2%, 14.3%

HSV

230.4, 51.0%, 19.2%

CMYK

51.0%, 42.9%, 0.0%, 80.8%

OKLCH

0.2337 0.041 274.6

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#181C31

#312D18

Analogous

#182831

#201831

#181C31

Triadic

#181C31

#31181C

#1C3118

Split Complementary

#181C31

#312018

#283118

Tetradic

#181C31

#311828

#312D18

#183120

Color Blindness Simulation

Original

#181C31

Protanopia

#1A1A2C

Deuteranopia

#1A192B

Tritanopia

#182827

Achromatopsia

#1D1D1D

CSS Usage

background-color: #181C31;
color: #181C31;
border-color: #181C31;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F6FA
100
#E8EAF2
200
#CFD3E8
300
#ADB4D7
400
#808BC1
500
#5462AB
600
#434E89
700
#363F6E
800
#2A3156
900
#22263F
950
#151828

Contrast Checker

Text on white

16.81:1

AA Pass AAA Pass

Text on black

1.25:1

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