#646574

#646574

Color Values

HEX

#646574

RGB

100, 101, 116

HSL

236.2, 7.4%, 42.4%

HSV

236.2, 13.8%, 45.5%

CMYK

13.8%, 12.9%, 0.0%, 54.5%

OKLCH

0.5112 0.0236 282.5

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#646574

#747364

Analogous

#646D74

#6B6474

#646574

Triadic

#646574

#746465

#657464

Split Complementary

#646574

#746B64

#6D7464

Tetradic

#646574

#74646D

#747364

#64746B

Color Blindness Simulation

Original

#646574

Protanopia

#646470

Deuteranopia

#64646F

Tritanopia

#646E6D

Achromatopsia

#666666

CSS Usage

background-color: #646574;
color: #646574;
border-color: #646574;
Nearest Tailwind: Gray 500 #6B7280

Tailwind Shades

50
#F7F7F8
100
#ECECEE
200
#D9D9DE
300
#BDBEC6
400
#9A9BA8
500
#767789
600
#5E5F6E
700
#4C4C58
800
#3B3C44
900
#2D2E34
950
#1D1D21

Contrast Checker

Text on white

5.74:1

AA Pass AAA Fail

Text on black

3.66:1

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