#51697E

#51697E

Color Values

HEX

#51697E

RGB

81, 105, 126

HSL

208.0, 21.7%, 40.6%

HSV

208.0, 35.7%, 49.4%

CMYK

35.7%, 16.7%, 0.0%, 50.6%

OKLCH

0.5098 0.044 245.2

Properties

Cool Dark Nearest: skyblue 4

Color Harmonies

Complementary

#51697E

#7E6651

Analogous

#517E7C

#51537E

#51697E

Triadic

#51697E

#7E5169

#697E51

Split Complementary

#51697E

#7E5153

#7E7C51

Tetradic

#51697E

#7C517E

#7E6651

#537E51

Color Blindness Simulation

Original

#51697E

Protanopia

#5B5C79

Deuteranopia

#5A5878

Tritanopia

#527574

Achromatopsia

#656565

CSS Usage

background-color: #51697E;
color: #51697E;
border-color: #51697E;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F9
100
#EAEDF0
200
#D4DCE3
300
#B5C3CF
400
#8CA2B5
500
#64819B
600
#50677C
700
#405363
800
#32414E
900
#27313A
950
#191F25

Contrast Checker

Text on white

5.72:1

AA Pass AAA Fail

Text on black

3.67:1

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