#515C78

#515C78

Color Values

HEX

#515C78

RGB

81, 92, 120

HSL

223.1, 19.4%, 39.4%

HSV

223.1, 32.5%, 47.1%

CMYK

32.5%, 23.3%, 0.0%, 52.9%

OKLCH

0.4766 0.0475 267.9

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#515C78

#786D51

Analogous

#516F78

#595178

#515C78

Triadic

#515C78

#78515C

#5C7851

Split Complementary

#515C78

#785951

#6F7851

Tetradic

#515C78

#78516F

#786D51

#517859

Color Blindness Simulation

Original

#515C78

Protanopia

#565671

Deuteranopia

#555470

Tritanopia

#526C6B

Achromatopsia

#5C5C5C

CSS Usage

background-color: #515C78;
color: #515C78;
border-color: #515C78;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#EAECF0
200
#D4D8E2
300
#B6BDCE
400
#8E99B3
500
#677598
600
#525D7A
700
#424B61
800
#333A4C
900
#282D39
950
#191C24

Contrast Checker

Text on white

6.66:1

AA Pass AAA Fail

Text on black

3.15:1

AA Fail 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