#57728B

#57728B

Color Values

HEX

#57728B

RGB

87, 114, 139

HSL

208.8, 23.0%, 44.3%

HSV

208.8, 37.4%, 54.5%

CMYK

37.4%, 18.0%, 0.0%, 45.5%

OKLCH

0.5406 0.0505 246.8

Properties

Cool Dark Nearest: skyblue 4

Color Harmonies

Complementary

#57728B

#8B7057

Analogous

#578B8A

#57588B

#57728B

Triadic

#57728B

#8B5772

#728B57

Split Complementary

#57728B

#8B5758

#8B8A57

Tetradic

#57728B

#8A578B

#8B7057

#588B57

Color Blindness Simulation

Original

#57728B

Protanopia

#636385

Deuteranopia

#615F84

Tritanopia

#58807F

Achromatopsia

#6E6E6E

CSS Usage

background-color: #57728B;
color: #57728B;
border-color: #57728B;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F9
100
#EAEDF1
200
#D3DCE4
300
#B4C2D0
400
#8BA2B6
500
#62819D
600
#4F677D
700
#3F5264
800
#31404E
900
#26313A
950
#181F25

Contrast Checker

Text on white

5.02:1

AA Pass AAA Fail

Text on black

4.18:1

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