#665EF3

#665EF3

Color Values

HEX

#665EF3

RGB

102, 94, 243

HSL

243.2, 86.1%, 66.1%

HSV

243.2, 61.3%, 95.3%

CMYK

58.0%, 61.3%, 0.0%, 4.7%

OKLCH

0.5756 0.2157 279.6

Properties

Cool Dark Nearest: slateblue 1

Color Harmonies

Complementary

#665EF3

#EBF35E

Analogous

#5EA1F3

#B05EF3

#665EF3

Triadic

#665EF3

#F3665E

#5EF366

Split Complementary

#665EF3

#F3B05E

#A1F35E

Tetradic

#665EF3

#F35EA1

#EBF35E

#5EF3B0

Color Blindness Simulation

Original

#665EF3

Protanopia

#6362CF

Deuteranopia

#6364C6

Tritanopia

#66B2AC

Achromatopsia

#6A6A6A

CSS Usage

background-color: #665EF3;
color: #665EF3;
border-color: #665EF3;
Nearest Tailwind: Indigo 500 #6366F1

Tailwind Shades

50
#F2F2FD
100
#E1E0FA
200
#C0BDFA
300
#938DF6
400
#584FF2
500
#1D12ED
600
#180EBE
700
#130B98
800
#0F0977
900
#0F0B56
950
#090736

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

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

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026