#646F67

#646F67

Color Values

HEX

#646F67

RGB

100, 111, 103

HSL

136.4, 5.2%, 41.4%

HSV

136.4, 9.9%, 43.5%

CMYK

9.9%, 0.0%, 7.2%, 56.5%

OKLCH

0.5298 0.0182 154.1

Properties

Cool Dark Nearest: RAL 7005 Mouse Grey

Color Harmonies

Complementary

#646F67

#6F646C

Analogous

#676F64

#646F6D

#646F67

Triadic

#646F67

#67646F

#6F6764

Split Complementary

#646F67

#6D646F

#6F6467

Tetradic

#646F67

#64676F

#6F646C

#6F6D64

Color Blindness Simulation

Original

#646F67

Protanopia

#696969

Deuteranopia

#686769

Tritanopia

#656A6B

Achromatopsia

#6C6C6C

CSS Usage

background-color: #646F67;
color: #646F67;
border-color: #646F67;
Nearest Tailwind: Neutral 500 #737373

Tailwind Shades

50
#F7F8F7
100
#ECEEED
200
#D9DDDA
300
#BFC5C0
400
#9CA69E
500
#79867C
600
#616B64
700
#4D5650
800
#3C433E
900
#2E332F
950
#1D201E

Contrast Checker

Text on white

5.23:1

AA Pass AAA Fail

Text on black

4.01:1

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