#00258B

#00258B

Color Values

HEX

#00258B

RGB

0, 37, 139

HSL

224.0, 100.0%, 27.3%

HSV

224.0, 100.0%, 54.5%

CMYK

100.0%, 73.4%, 0.0%, 45.5%

OKLCH

0.3299 0.1715 263.3

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#00258B

#8B6600

Analogous

#006B8B

#20008B

#00258B

Triadic

#00258B

#8B0025

#258B00

Split Complementary

#00258B

#8B2000

#6B8B00

Tetradic

#00258B

#8B006B

#8B6600

#008B20

Color Blindness Simulation

Original

#00258B

Protanopia

#101072

Deuteranopia

#0E0B6C

Tritanopia

#025F5B

Achromatopsia

#242424

CSS Usage

background-color: #00258B;
color: #00258B;
border-color: #00258B;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F1F4FE
100
#DEE6FC
200
#B8CBFF
300
#85A5FF
400
#4275FF
500
#0044FF
600
#0036CC
700
#002CA3
800
#002280
900
#051C5C
950
#03123A

Contrast Checker

Text on white

12.82:1

AA Pass AAA Pass

Text on black

1.64:1

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