#556981

#556981

Color Values

HEX

#556981

RGB

85, 105, 129

HSL

212.7, 20.6%, 42.0%

HSV

212.7, 34.1%, 50.6%

CMYK

34.1%, 18.6%, 0.0%, 49.4%

OKLCH

0.5138 0.0452 253.3

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#556981

#816D55

Analogous

#557F81

#575581

#556981

Triadic

#556981

#815569

#698155

Split Complementary

#556981

#815755

#7F8155

Tetradic

#556981

#81557F

#816D55

#558157

Color Blindness Simulation

Original

#556981

Protanopia

#5E5E7B

Deuteranopia

#5C5B7A

Tritanopia

#567776

Achromatopsia

#666666

CSS Usage

background-color: #556981;
color: #556981;
border-color: #556981;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F9
100
#EAEDF0
200
#D4DBE3
300
#B5C1CE
400
#8D9FB4
500
#657D9A
600
#51647B
700
#415062
800
#333F4D
900
#273039
950
#191E24

Contrast Checker

Text on white

5.64:1

AA Pass AAA Fail

Text on black

3.72:1

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