#255E8B

#255E8B

Color Values

HEX

#255E8B

RGB

37, 94, 139

HSL

206.5, 58.0%, 34.5%

HSV

206.5, 73.4%, 54.5%

CMYK

73.4%, 32.4%, 0.0%, 45.5%

OKLCH

0.4664 0.0941 245.7

Properties

Cool Dark Nearest: RAL 5019 Capri Blue

Color Harmonies

Complementary

#255E8B

#8B5225

Analogous

#258B85

#252B8B

#255E8B

Triadic

#255E8B

#8B255E

#5E8B25

Split Complementary

#255E8B

#8B252B

#8B8525

Tetradic

#255E8B

#85258B

#8B5225

#2B8B25

Color Blindness Simulation

Original

#255E8B

Protanopia

#3E3E80

Deuteranopia

#3A367E

Tritanopia

#287876

Achromatopsia

#555555

CSS Usage

background-color: #255E8B;
color: #255E8B;
border-color: #255E8B;
Nearest Tailwind: Sky 800 #075985

Tailwind Shades

50
#F4F8FB
100
#E4EEF6
200
#C7DEF0
300
#9EC6E5
400
#6AA7D7
500
#3688C9
600
#2B6DA1
700
#225781
800
#1B4465
900
#17334A
950
#0F202F

Contrast Checker

Text on white

6.88:1

AA Pass AAA Fail

Text on black

3.05:1

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