#516C66

#516C66

Color Values

HEX

#516C66

RGB

81, 108, 102

HSL

166.7, 14.3%, 37.1%

HSV

166.7, 25.0%, 42.4%

CMYK

25.0%, 0.0%, 5.6%, 57.6%

OKLCH

0.508 0.0331 179.7

Properties

Cool Dark Nearest: RAL 7005 Mouse Grey

Color Harmonies

Complementary

#516C66

#6C5157

Analogous

#516C59

#51656C

#516C66

Triadic

#516C66

#66516C

#6C6651

Split Complementary

#516C66

#6C5165

#6C5951

Tetradic

#516C66

#59516C

#6C5157

#656C51

Color Blindness Simulation

Original

#516C66

Protanopia

#5D5D67

Deuteranopia

#5B5968

Tritanopia

#526969

Achromatopsia

#666666

CSS Usage

background-color: #516C66;
color: #516C66;
border-color: #516C66;
Nearest Tailwind: Neutral 500 #737373

Tailwind Shades

50
#F6F8F8
100
#EBEFEE
200
#D6E0DE
300
#B9CBC7
400
#93AEA8
500
#6D928A
600
#57756E
700
#465D58
800
#374945
900
#2A3734
950
#1B2321

Contrast Checker

Text on white

5.7:1

AA Pass AAA Fail

Text on black

3.69:1

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