#3F373B

#3F373B

Color Values

HEX

#3F373B

RGB

63, 55, 59

HSL

330.0, 6.8%, 23.1%

HSV

330.0, 12.7%, 24.7%

CMYK

0.0%, 12.7%, 6.3%, 75.3%

OKLCH

0.3466 0.0131 346.1

Properties

Warm Dark Nearest: RAL 8019 Grey Brown

Color Harmonies

Complementary

#3F373B

#373F3B

Analogous

#3F373F

#3F3737

#3F373B

Triadic

#3F373B

#3B3F37

#373B3F

Split Complementary

#3F373B

#373F37

#373F3F

Tetradic

#3F373B

#3F3F37

#373F3B

#37373F

Color Blindness Simulation

Original

#3F373B

Protanopia

#3C3B3A

Deuteranopia

#3C3D3A

Tritanopia

#3F3939

Achromatopsia

#393939

CSS Usage

background-color: #3F373B;
color: #3F373B;
border-color: #3F373B;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F8F7F7
100
#EEECED
200
#DED9DB
300
#C6BEC2
400
#A79AA1
500
#887780
600
#6D5F66
700
#574C52
800
#443B40
900
#332D30
950
#201D1F

Contrast Checker

Text on white

11.53:1

AA Pass AAA Pass

Text on black

1.82:1

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