#403537

#403537

Color Values

HEX

#403537

RGB

64, 53, 55

HSL

349.1, 9.4%, 22.9%

HSV

349.1, 17.2%, 25.1%

CMYK

0.0%, 17.2%, 14.1%, 74.9%

OKLCH

0.3415 0.016 5.6

Properties

Warm Dark Nearest: RAL 8019 Grey Brown

Color Harmonies

Complementary

#403537

#35403E

Analogous

#40353C

#403835

#403537

Triadic

#403537

#374035

#353740

Split Complementary

#403537

#354038

#353C40

Tetradic

#403537

#3C4035

#35403E

#383540

Color Blindness Simulation

Original

#403537

Protanopia

#3B3B37

Deuteranopia

#3C3D36

Tritanopia

#3F3636

Achromatopsia

#373737

CSS Usage

background-color: #403537;
color: #403537;
border-color: #403537;
Nearest Tailwind: Stone 700 #44403C

Tailwind Shades

50
#F8F7F7
100
#EFECEC
200
#DFD8D9
300
#C8BCBE
400
#AA989B
500
#8B7478
600
#705C60
700
#594A4D
800
#463A3C
900
#352C2E
950
#211C1D

Contrast Checker

Text on white

11.78:1

AA Pass AAA Pass

Text on black

1.78:1

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