#556778

#556778

Color Values

HEX

#556778

RGB

85, 103, 120

HSL

209.1, 17.1%, 40.2%

HSV

209.1, 29.2%, 47.1%

CMYK

29.2%, 14.2%, 0.0%, 52.9%

OKLCH

0.5054 0.0348 247.0

Properties

Cool Dark Nearest: lightskyblue 4

Color Harmonies

Complementary

#556778

#786655

Analogous

#557878

#555678

#556778

Triadic

#556778

#785567

#677855

Split Complementary

#556778

#785556

#787855

Tetradic

#556778

#785578

#786655

#567855

Color Blindness Simulation

Original

#556778

Protanopia

#5D5D74

Deuteranopia

#5C5A73

Tritanopia

#567170

Achromatopsia

#646464

CSS Usage

background-color: #556778;
color: #556778;
border-color: #556778;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F8
100
#EBEDF0
200
#D5DBE1
300
#B7C2CC
400
#91A1B1
500
#6A8095
600
#556777
700
#445260
800
#35404B
900
#293138
950
#1A1F23

Contrast Checker

Text on white

5.84:1

AA Pass AAA Fail

Text on black

3.6:1

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