#181E59

#181E59

Color Values

HEX

#181E59

RGB

24, 30, 89

HSL

234.5, 57.5%, 22.2%

HSV

234.5, 73.0%, 34.9%

CMYK

73.0%, 66.3%, 0.0%, 65.1%

OKLCH

0.2719 0.105 272.8

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#181E59

#595318

Analogous

#183F59

#331859

#181E59

Triadic

#181E59

#59181E

#1E5918

Split Complementary

#181E59

#593318

#3F5918

Tetradic

#181E59

#59183F

#595318

#185933

Color Blindness Simulation

Original

#181E59

Protanopia

#1B1B4B

Deuteranopia

#1A1A47

Tritanopia

#183F3D

Achromatopsia

#212121

CSS Usage

background-color: #181E59;
color: #181E59;
border-color: #181E59;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FB
100
#E4E6F6
200
#C7CBF0
300
#9FA5E5
400
#6A74D7
500
#3644C9
600
#2B36A1
700
#232B81
800
#1B2264
900
#171C4A
950
#0F122E

Contrast Checker

Text on white

15.34:1

AA Pass AAA Pass

Text on black

1.37:1

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