#666AF7

#666AF7

Color Values

HEX

#666AF7

RGB

102, 106, 247

HSL

238.3, 90.1%, 68.4%

HSV

238.3, 58.7%, 96.9%

CMYK

58.7%, 57.1%, 0.0%, 3.1%

OKLCH

0.5988 0.2063 277.0

Properties

Cool Light Nearest: slateblue 2

Color Harmonies

Complementary

#666AF7

#F7F366

Analogous

#66B3F7

#AA66F7

#666AF7

Triadic

#666AF7

#F7666A

#6AF766

Split Complementary

#666AF7

#F7AA66

#B3F766

Tetradic

#666AF7

#F766B3

#F7F366

#66F7AA

Color Blindness Simulation

Original

#666AF7

Protanopia

#6868D5

Deuteranopia

#6867CD

Tritanopia

#66BAB4

Achromatopsia

#737373

CSS Usage

background-color: #666AF7;
color: #666AF7;
border-color: #666AF7;
Nearest Tailwind: Indigo 500 #6366F1

Tailwind Shades

50
#F1F2FD
100
#DFE0FB
200
#BBBDFB
300
#8B8EF9
400
#4C50F6
500
#0D13F2
600
#0A0FC2
700
#080C9B
800
#060A79
900
#090B58
950
#060737

Contrast Checker

Text on white

4.23:1

AA Fail AAA Fail

Text on black

4.97:1

AA Pass AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

1月 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

1月 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

1月 15, 2026