#646A79

#646A79

Color Values

HEX

#646A79

RGB

100, 106, 121

HSL

222.9, 9.5%, 43.3%

HSV

222.9, 17.4%, 47.5%

CMYK

17.4%, 12.4%, 0.0%, 52.5%

OKLCH

0.5245 0.0247 268.2

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#646A79

#797364

Analogous

#647479

#686479

#646A79

Triadic

#646A79

#79646A

#6A7964

Split Complementary

#646A79

#796864

#747964

Tetradic

#646A79

#796474

#797364

#647968

Color Blindness Simulation

Original

#646A79

Protanopia

#676775

Deuteranopia

#666674

Tritanopia

#647372

Achromatopsia

#6A6A6A

CSS Usage

background-color: #646A79;
color: #646A79;
border-color: #646A79;
Nearest Tailwind: Gray 500 #6B7280

Tailwind Shades

50
#F7F7F8
100
#ECEDEF
200
#D8DADF
300
#BCBFC8
400
#989DAA
500
#737A8C
600
#5C6270
700
#4A4E59
800
#3A3D46
900
#2C2F35
950
#1C1D21

Contrast Checker

Text on white

5.41:1

AA Pass AAA Fail

Text on black

3.88:1

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