#666BAF

#666BAF

Color Values

HEX

#666BAF

RGB

102, 107, 175

HSL

235,9, 31,3%, 54,3%

HSV

235,9, 41,7%, 68,6%

CMYK

41,7%, 38,9%, 0,0%, 31,4%

OKLCH

0,5537 0,1051 279,2

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#666BAF

#AFAA66

Analogous

#668FAF

#8566AF

#666BAF

Triadic

#666BAF

#AF666B

#6BAF66

Split Complementary

#666BAF

#AF8566

#8FAF66

Tetradic

#666BAF

#AF668F

#AFAA66

#66AF85

Color Blindness Simulation

Original

#666BAF

Protanopia

#68689F

Deuteranopia

#68689B

Tritanopia

#66928F

Achromatopsia

#6F6F6F

CSS Usage

background-color: #666BAF;
color: #666BAF;
border-color: #666BAF;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F5F6F9
100
#E8E9F2
200
#D0D2E6
300
#AFB1D5
400
#8387BE
500
#585DA7
600
#464A86
700
#383C6B
800
#2C2F54
900
#23253E
950
#161727

Contrast Checker

Text on white

4,9:1

AA Pass AAA Fail

Text on black

4,29:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026