#645457

#645457

Color Values

HEX

#645457

RGB

100, 84, 87

HSL

348.8, 8.7%, 36.1%

HSV

348.8, 16.0%, 39.2%

CMYK

0.0%, 16.0%, 13.0%, 60.8%

OKLCH

0.4628 0.0216 5.3

Properties

Warm Dark Nearest: NCS S 7000-N Dark Grey

Color Harmonies

Complementary

#645457

#546461

Analogous

#64545F

#645954

#645457

Triadic

#645457

#576454

#545764

Split Complementary

#645457

#546459

#545F64

Tetradic

#645457

#5F6454

#546461

#595464

Color Blindness Simulation

Original

#645457

Protanopia

#5D5D56

Deuteranopia

#5E5F56

Tritanopia

#635656

Achromatopsia

#585858

CSS Usage

background-color: #645457;
color: #645457;
border-color: #645457;
Nearest Tailwind: Stone 600 #57534E

Tailwind Shades

50
#F8F7F7
100
#EEECEC
200
#DED8D9
300
#C7BCBE
400
#A9989C
500
#8B7479
600
#6F5D60
700
#594B4D
800
#453A3C
900
#342D2E
950
#211C1D

Contrast Checker

Text on white

7.12:1

AA Pass AAA Pass

Text on black

2.95:1

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