#663F3D

#663F3D

Color Values

HEX

#663F3D

RGB

102, 63, 61

HSL

2.9, 25.2%, 32.0%

HSV

2.9, 40.2%, 40.0%

CMYK

0.0%, 38.2%, 40.2%, 60.0%

OKLCH

0.4129 0.0551 22.9

Properties

Warm Dark Nearest: RAL 8015 Chestnut Brown

Color Harmonies

Complementary

#663F3D

#3D6466

Analogous

#663D50

#66543D

#663F3D

Triadic

#663F3D

#3D663F

#3F3D66

Split Complementary

#663F3D

#3D6654

#3D5066

Tetradic

#663F3D

#50663D

#3D6466

#543D66

Color Blindness Simulation

Original

#663F3D

Protanopia

#55553D

Deuteranopia

#575A3E

Tritanopia

#643E3E

Achromatopsia

#474747

CSS Usage

background-color: #663F3D;
color: #663F3D;
border-color: #663F3D;
Nearest Tailwind: Stone 700 #44403C

Tailwind Shades

50
#F9F6F6
100
#F1EAE9
200
#E4D3D2
300
#D1B4B2
400
#B88B89
500
#A0625F
600
#804F4C
700
#663F3D
800
#503130
900
#3B2725
950
#261818

Contrast Checker

Text on white

8.96:1

AA Pass AAA Pass

Text on black

2.34:1

AA Fail AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026