#183F6F

#183F6F

Color Values

HEX

#183F6F

RGB

24, 63, 111

HSL

213.1, 64.4%, 26.5%

HSV

213.1, 78.4%, 43.5%

CMYK

78.4%, 43.2%, 0.0%, 56.5%

OKLCH

0.367 0.0938 255.3

Properties

Cool Dark Nearest: Midnight Blue

Color Harmonies

Complementary

#183F6F

#6F4818

Analogous

#186B6F

#1D186F

#183F6F

Triadic

#183F6F

#6F183F

#3F6F18

Split Complementary

#183F6F

#6F1D18

#6B6F18

Tetradic

#183F6F

#6F186B

#6F4818

#186F1D

Color Blindness Simulation

Original

#183F6F

Protanopia

#292963

Deuteranopia

#272461

Tritanopia

#1A5A58

Achromatopsia

#3A3A3A

CSS Usage

background-color: #183F6F;
color: #183F6F;
border-color: #183F6F;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F3F7FC
100
#E3ECF7
200
#C4D9F2
300
#9ABEE9
400
#649ADD
500
#2D77D2
600
#245FA8
700
#1D4C86
800
#173C69
900
#142E4D
950
#0D1D30

Contrast Checker

Text on white

10.61:1

AA Pass AAA Pass

Text on black

1.98:1

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