#00238B

#00238B

Color Values

HEX

#00238B

RGB

0, 35, 139

HSL

224.9, 100.0%, 27.3%

HSV

224.9, 100.0%, 54.5%

CMYK

100.0%, 74.8%, 0.0%, 45.5%

OKLCH

0.3265 0.1737 263.5

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#00238B

#8B6800

Analogous

#00698B

#23008B

#00238B

Triadic

#00238B

#8B0023

#238B00

Split Complementary

#00238B

#8B2300

#698B00

Tetradic

#00238B

#8B0069

#8B6800

#008B23

Color Blindness Simulation

Original

#00238B

Protanopia

#0F0F72

Deuteranopia

#0D0A6C

Tritanopia

#025E5A

Achromatopsia

#232323

CSS Usage

background-color: #00238B;
color: #00238B;
border-color: #00238B;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F1F4FE
100
#DEE6FC
200
#B8CAFF
300
#85A3FF
400
#4272FF
500
#0040FF
600
#0033CC
700
#0029A3
800
#002080
900
#051B5C
950
#03113A

Contrast Checker

Text on white

13.02:1

AA Pass AAA Pass

Text on black

1.61:1

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