#3F414F

#3F414F

Color Values

HEX

#3F414F

RGB

63, 65, 79

HSL

232.5, 11.3%, 27.8%

HSV

232.5, 20.3%, 31.0%

CMYK

20.3%, 17.7%, 0.0%, 69.0%

OKLCH

0.379 0.024 278.8

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3F414F

#4F4D3F

Analogous

#3F494F

#453F4F

#3F414F

Triadic

#3F414F

#4F3F41

#414F3F

Split Complementary

#3F414F

#4F453F

#494F3F

Tetradic

#3F414F

#4F3F49

#4F4D3F

#3F4F45

Color Blindness Simulation

Original

#3F414F

Protanopia

#40404C

Deuteranopia

#40404B

Tritanopia

#3F4948

Achromatopsia

#424242

CSS Usage

background-color: #3F414F;
color: #3F414F;
border-color: #3F414F;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F7F7F8
100
#EBECEF
200
#D7D8DF
300
#BBBDC9
400
#9699AB
500
#71758E
600
#5A5D72
700
#484B5B
800
#393A47
900
#2C2D35
950
#1B1C22

Contrast Checker

Text on white

10.09:1

AA Pass AAA Pass

Text on black

2.08:1

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