#40373C

#40373C

Color Values

HEX

#40373C

RGB

64, 55, 60

HSL

326.7, 7.6%, 23.3%

HSV

326.7, 14.1%, 25.1%

CMYK

0.0%, 14.1%, 6.2%, 74.9%

OKLCH

0.3481 0.0151 343.4

Properties

Warm Dark Nearest: RAL 8019 Grey Brown

Color Harmonies

Complementary

#40373C

#37403B

Analogous

#3F3740

#403737

#40373C

Triadic

#40373C

#3C4037

#373C40

Split Complementary

#40373C

#374037

#37403F

Tetradic

#40373C

#403F37

#37403B

#373740

Color Blindness Simulation

Original

#40373C

Protanopia

#3C3C3B

Deuteranopia

#3D3D3A

Tritanopia

#403A3A

Achromatopsia

#393939

CSS Usage

background-color: #40373C;
color: #40373C;
border-color: #40373C;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F8F7F7
100
#EEECED
200
#DED9DC
300
#C6BDC2
400
#A899A1
500
#897681
600
#6E5E67
700
#584B52
800
#453B40
900
#342D31
950
#211D1F

Contrast Checker

Text on white

11.48:1

AA Pass AAA Pass

Text on black

1.83:1

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