#183F6D

#183F6D

Color Values

HEX

#183F6D

RGB

24, 63, 109

HSL

212.5, 63.9%, 26.1%

HSV

212.5, 78.0%, 42.7%

CMYK

78.0%, 42.2%, 0.0%, 57.3%

OKLCH

0.3656 0.0908 254.5

Properties

Cool Dark Nearest: Midnight Blue

Color Harmonies

Complementary

#183F6D

#6D4618

Analogous

#186A6D

#1C186D

#183F6D

Triadic

#183F6D

#6D183F

#3F6D18

Split Complementary

#183F6D

#6D1C18

#6A6D18

Tetradic

#183F6D

#6D186A

#6D4618

#186D1C

Color Blindness Simulation

Original

#183F6D

Protanopia

#292962

Deuteranopia

#27245F

Tritanopia

#1A5957

Achromatopsia

#3A3A3A

CSS Usage

background-color: #183F6D;
color: #183F6D;
border-color: #183F6D;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F3F7FC
100
#E3ECF7
200
#C4D9F2
300
#9BBFE9
400
#649CDD
500
#2E79D1
600
#2561A7
700
#1D4D86
800
#173C68
900
#152E4C
950
#0D1D30

Contrast Checker

Text on white

10.66:1

AA Pass AAA Pass

Text on black

1.97:1

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