#231D81

#231D81

Color Values

HEX

#231D81

RGB

35, 29, 129

HSL

243.6, 63.3%, 31.0%

HSV

243.6, 77.5%, 50.6%

CMYK

72.9%, 77.5%, 0.0%, 49.4%

OKLCH

0.3201 0.159 275.2

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#231D81

#7B811D

Analogous

#1D4981

#551D81

#231D81

Triadic

#231D81

#81231D

#1D8123

Split Complementary

#231D81

#81551D

#49811D

Tetradic

#231D81

#811D49

#7B811D

#1D8155

Color Blindness Simulation

Original

#231D81

Protanopia

#202069

Deuteranopia

#212163

Tritanopia

#235652

Achromatopsia

#252525

CSS Usage

background-color: #231D81;
color: #231D81;
border-color: #231D81;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F4F3FB
100
#E5E4F7
200
#C7C5F2
300
#A09BE9
400
#6C65DC
500
#382FD0
600
#2D25A7
700
#241E85
800
#1C1768
900
#18154C
950
#0F0D30

Contrast Checker

Text on white

13.43:1

AA Pass AAA Pass

Text on black

1.56:1

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