#515F55

#515F55

Color Values

HEX

#515F55

RGB

81, 95, 85

HSL

137.1, 8.0%, 34.5%

HSV

137.1, 14.7%, 37.3%

CMYK

14.7%, 0.0%, 10.5%, 62.7%

OKLCH

0.4703 0.0235 154.3

Properties

Cool Dark Nearest: RAL 7012 Basalt Grey

Color Harmonies

Complementary

#515F55

#5F515B

Analogous

#545F51

#515F5C

#515F55

Triadic

#515F55

#55515F

#5F5551

Split Complementary

#515F55

#5C515F

#5F5154

Tetradic

#515F55

#51545F

#5F515B

#5F5C51

Color Blindness Simulation

Original

#515F55

Protanopia

#575757

Deuteranopia

#565558

Tritanopia

#52595A

Achromatopsia

#5B5B5B

CSS Usage

background-color: #515F55;
color: #515F55;
border-color: #515F55;
Nearest Tailwind: Stone 600 #57534E

Tailwind Shades

50
#F7F8F7
100
#ECEEED
200
#D8DEDA
300
#BDC7C0
400
#99A89D
500
#758A7B
600
#5E6E62
700
#4B584F
800
#3B453E
900
#2D342F
950
#1C211E

Contrast Checker

Text on white

6.74:1

AA Pass AAA Fail

Text on black

3.12:1

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