#3F4D4B

#3F4D4B

Color Values

HEX

#3F4D4B

RGB

63, 77, 75

HSL

171.4, 10.0%, 27.5%

HSV

171.4, 18.2%, 30.2%

CMYK

18.2%, 0.0%, 2.6%, 69.8%

OKLCH

0.4074 0.0181 185.9

Properties

Cool Dark Nearest: Outer Space

Color Harmonies

Complementary

#3F4D4B

#4D3F41

Analogous

#3F4D44

#3F484D

#3F4D4B

Triadic

#3F4D4B

#4B3F4D

#4D4B3F

Split Complementary

#3F4D4B

#4D3F48

#4D443F

Tetradic

#3F4D4B

#443F4D

#4D3F41

#484D3F

Color Blindness Simulation

Original

#3F4D4B

Protanopia

#45454B

Deuteranopia

#44434C

Tritanopia

#404C4C

Achromatopsia

#4A4A4A

CSS Usage

background-color: #3F4D4B;
color: #3F4D4B;
border-color: #3F4D4B;
Nearest Tailwind: Neutral 600 #525252

Tailwind Shades

50
#F7F8F8
100
#ECEFEE
200
#D8DFDE
300
#BCC8C6
400
#97AAA7
500
#738C89
600
#5C706D
700
#495A57
800
#394644
900
#2C3534
950
#1C2121

Contrast Checker

Text on white

8.84:1

AA Pass AAA Pass

Text on black

2.37:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026