#181F6D

#181F6D

Color Values

HEX

#181F6D

RGB

24, 31, 109

HSL

235.1, 63.9%, 26.1%

HSV

235.1, 78.0%, 42.7%

CMYK

78.0%, 71.6%, 0.0%, 57.3%

OKLCH

0.2943 0.1329 271.2

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#181F6D

#6D6618

Analogous

#184A6D

#3C186D

#181F6D

Triadic

#181F6D

#6D181F

#1F6D18

Split Complementary

#181F6D

#6D3C18

#4A6D18

Tetradic

#181F6D

#6D184A

#6D6618

#186D3C

Color Blindness Simulation

Original

#181F6D

Protanopia

#1B1B5A

Deuteranopia

#1B1A56

Tritanopia

#184B48

Achromatopsia

#232323

CSS Usage

background-color: #181F6D;
color: #181F6D;
border-color: #181F6D;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F3F4FC
100
#E3E5F7
200
#C4C8F2
300
#9BA1E9
400
#646EDD
500
#2E3BD1
600
#252FA7
700
#1D2686
800
#171E68
900
#15194C
950
#0D1030

Contrast Checker

Text on white

14.43:1

AA Pass AAA Pass

Text on black

1.46:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026