#51789F

#51789F

Color Values

HEX

#51789F

RGB

81, 120, 159

HSL

210.0, 32.5%, 47.1%

HSV

210.0, 49.1%, 62.4%

CMYK

49.1%, 24.5%, 0.0%, 37.6%

OKLCH

0.56 0.0751 249.3

Properties

Cool Dark Nearest: RAL 5023 Distant Blue

Color Harmonies

Complementary

#51789F

#9F7851

Analogous

#519F9F

#51519F

#51789F

Triadic

#51789F

#9F5178

#789F51

Split Complementary

#51789F

#9F5151

#9F9F51

Tetradic

#51789F

#9F519F

#9F7851

#519F51

Color Blindness Simulation

Original

#51789F

Protanopia

#626296

Deuteranopia

#605D93

Tritanopia

#538E8C

Achromatopsia

#737373

CSS Usage

background-color: #51789F;
color: #51789F;
border-color: #51789F;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F5F7F9
100
#E8EDF2
200
#D0DBE7
300
#AEC2D6
400
#82A1BF
500
#5680A9
600
#456687
700
#37526C
800
#2B4054
900
#22303F
950
#161F28

Contrast Checker

Text on white

4.63:1

AA Pass AAA Fail

Text on black

4.54:1

AA Pass AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026