#25183A

#25183A

Color Values

HEX

#25183A

RGB

37, 24, 58

HSL

262.9, 41.5%, 16.1%

HSV

262.9, 58.6%, 22.7%

CMYK

36.2%, 58.6%, 0.0%, 77.3%

OKLCH

0.2446 0.0638 299.3

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#25183A

#2D3A18

Analogous

#181C3A

#36183A

#25183A

Triadic

#25183A

#3A2518

#183A25

Split Complementary

#25183A

#3A3618

#1C3A18

Tetradic

#25183A

#3A181C

#2D3A18

#183A36

Color Blindness Simulation

Original

#25183A

Protanopia

#1F1F32

Deuteranopia

#202130

Tritanopia

#242B2A

Achromatopsia

#1D1D1D

CSS Usage

background-color: #25183A;
color: #25183A;
border-color: #25183A;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F5FA
100
#ECE7F3
200
#D8CCEA
300
#BCA8DB
400
#9779C8
500
#734BB4
600
#5C3C90
700
#4A3073
800
#39255A
900
#2C1E43
950
#1C132A

Contrast Checker

Text on white

16.53:1

AA Pass AAA Pass

Text on black

1.27:1

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