#555B8F

#555B8F

Color Values

HEX

#555B8F

RGB

85, 91, 143

HSL

233.8, 25.4%, 44.7%

HSV

233.8, 40.6%, 56.1%

CMYK

40.6%, 36.4%, 0.0%, 43.9%

OKLCH

0.4891 0.0835 277.8

Properties

Cool Dark Nearest: RAL 5007 Brilliant Blue

Color Harmonies

Complementary

#555B8F

#8F8955

Analogous

#55788F

#6C558F

#555B8F

Triadic

#555B8F

#8F555B

#5B8F55

Split Complementary

#555B8F

#8F6C55

#788F55

Tetradic

#555B8F

#8F5578

#8F8955

#558F6C

Color Blindness Simulation

Original

#555B8F

Protanopia

#585882

Deuteranopia

#57577F

Tritanopia

#557876

Achromatopsia

#5D5D5D

CSS Usage

background-color: #555B8F;
color: #555B8F;
border-color: #555B8F;
Nearest Tailwind: Sky 800 #075985

Tailwind Shades

50
#F6F6F9
100
#E9EAF1
200
#D2D4E4
300
#B2B5D1
400
#898EB9
500
#5F66A0
600
#4C5180
700
#3D4166
800
#303350
900
#25283C
950
#181926

Contrast Checker

Text on white

6.4:1

AA Pass AAA Fail

Text on black

3.28:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026