#3F4048

#3F4048

Color Values

HEX

#3F4048

RGB

63, 64, 72

HSL

233.3, 6.7%, 26.5%

HSV

233.3, 12.5%, 28.2%

CMYK

12.5%, 11.1%, 0.0%, 71.8%

OKLCH

0.3736 0.0137 280.1

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3F4048

#48473F

Analogous

#3F4548

#433F48

#3F4048

Triadic

#3F4048

#483F40

#40483F

Split Complementary

#3F4048

#48433F

#45483F

Tetradic

#3F4048

#483F45

#48473F

#3F4843

Color Blindness Simulation

Original

#3F4048

Protanopia

#3F3F46

Deuteranopia

#3F3F46

Tritanopia

#3F4544

Achromatopsia

#404040

CSS Usage

background-color: #3F4048;
color: #3F4048;
border-color: #3F4048;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#ECECEE
200
#D9D9DE
300
#BEBFC6
400
#9A9CA7
500
#777988
600
#5F616D
700
#4C4D57
800
#3B3C44
900
#2E2E33
950
#1D1D20

Contrast Checker

Text on white

10.3:1

AA Pass AAA Pass

Text on black

2.04:1

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