#51657D

#51657D

Color Values

HEX

#51657D

RGB

81, 101, 125

HSL

212.7, 21.4%, 40.4%

HSV

212.7, 35.2%, 49.0%

CMYK

35.2%, 19.2%, 0.0%, 51.0%

OKLCH

0.4999 0.0455 253.3

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#51657D

#7D6951

Analogous

#517B7D

#53517D

#51657D

Triadic

#51657D

#7D5165

#657D51

Split Complementary

#51657D

#7D5351

#7B7D51

Tetradic

#51657D

#7D517B

#7D6951

#517D53

Color Blindness Simulation

Original

#51657D

Protanopia

#5A5A77

Deuteranopia

#585776

Tritanopia

#527372

Achromatopsia

#626262

CSS Usage

background-color: #51657D;
color: #51657D;
border-color: #51657D;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F9
100
#EAEDF0
200
#D4DBE3
300
#B5C1CF
400
#8C9FB5
500
#647D9B
600
#50647C
700
#405063
800
#323F4D
900
#27303A
950
#191E24

Contrast Checker

Text on white

5.99:1

AA Pass AAA Fail

Text on black

3.51:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026