#182D8C

#182D8C

Color Values

HEX

#182D8C

RGB

24, 45, 140

HSL

229.1, 70.7%, 32.2%

HSV

229.1, 82.9%, 54.9%

CMYK

82.9%, 67.9%, 0.0%, 45.1%

OKLCH

0.3524 0.1586 267.3

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#182D8C

#8C7718

Analogous

#18678C

#3D188C

#182D8C

Triadic

#182D8C

#8C182D

#2D8C18

Split Complementary

#182D8C

#8C3D18

#678C18

Tetradic

#182D8C

#8C1867

#8C7718

#188C3D

Color Blindness Simulation

Original

#182D8C

Protanopia

#212175

Deuteranopia

#201E70

Tritanopia

#19635F

Achromatopsia

#2F2F2F

CSS Usage

background-color: #182D8C;
color: #182D8C;
border-color: #182D8C;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F3F4FC
100
#E2E6F8
200
#C2CBF5
300
#97A6ED
400
#5E76E3
500
#2546DA
600
#1E38AE
700
#182D8B
800
#13236D
900
#121D4F
950
#0B1232

Contrast Checker

Text on white

11.71:1

AA Pass AAA Pass

Text on black

1.79:1

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