#51697B

#51697B

Color Values

HEX

#51697B

RGB

81, 105, 123

HSL

205.7, 20.6%, 40.0%

HSV

205.7, 34.1%, 48.2%

CMYK

34.1%, 14.6%, 0.0%, 51.8%

OKLCH

0.5085 0.0405 241.0

Properties

Cool Dark Nearest: skyblue 4

Color Harmonies

Complementary

#51697B

#7B6351

Analogous

#517B78

#51547B

#51697B

Triadic

#51697B

#7B5169

#697B51

Split Complementary

#51697B

#7B5154

#7B7851

Tetradic

#51697B

#78517B

#7B6351

#547B51

Color Blindness Simulation

Original

#51697B

Protanopia

#5B5C77

Deuteranopia

#5A5876

Tritanopia

#527372

Achromatopsia

#656565

CSS Usage

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

Tailwind Shades

50
#F6F8F9
100
#EAEEF0
200
#D4DCE3
300
#B5C4CE
400
#8DA3B4
500
#65839A
600
#51697B
700
#415462
800
#33424D
900
#273239
950
#191F24

Contrast Checker

Text on white

5.74:1

AA Pass AAA Fail

Text on black

3.66:1

AA Fail AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026