#666AC8

#666AC8

Color Values

HEX

#666AC8

RGB

102, 106, 200

HSL

237.6, 47.1%, 59.2%

HSV

237.6, 49.0%, 78.4%

CMYK

49.0%, 47.0%, 0.0%, 21.6%

OKLCH

0.5665 0.1427 279.0

Properties

Cool Dark Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#666AC8

#C8C466

Analogous

#669BC8

#9366C8

#666AC8

Triadic

#666AC8

#C8666A

#6AC866

Split Complementary

#666AC8

#C89366

#9BC866

Tetradic

#666AC8

#C8669B

#C8C466

#66C893

Color Blindness Simulation

Original

#666AC8

Protanopia

#6868B1

Deuteranopia

#6867AC

Tritanopia

#669F9B

Achromatopsia

#707070

CSS Usage

background-color: #666AC8;
color: #666AC8;
border-color: #666AC8;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CACCEC
300
#A5A7DF
400
#7478CD
500
#4348BC
600
#363A96
700
#2B2E78
800
#22245E
900
#1C1E45
950
#12132C

Contrast Checker

Text on white

4.71:1

AA Pass AAA Fail

Text on black

4.46:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026