#646AC6

#646AC6

Color Values

HEX

#646AC6

RGB

100, 106, 198

HSL

236.3, 46.2%, 58.4%

HSV

236.3, 49.5%, 77.6%

CMYK

49.5%, 46.5%, 0.0%, 22.4%

OKLCH

0.5638 0.1403 278.1

Properties

Cool Dark Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#646AC6

#C6C064

Analogous

#649BC6

#8F64C6

#646AC6

Triadic

#646AC6

#C6646A

#6AC664

Split Complementary

#646AC6

#C68F64

#9BC664

Tetradic

#646AC6

#C6649B

#C6C064

#64C68F

Color Blindness Simulation

Original

#646AC6

Protanopia

#6767B0

Deuteranopia

#6666AA

Tritanopia

#649E9A

Achromatopsia

#6F6F6F

CSS Usage

background-color: #646AC6;
color: #646AC6;
border-color: #646AC6;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CBCDEC
300
#A6A9DE
400
#757ACC
500
#454CBA
600
#373D95
700
#2C3177
800
#22265D
900
#1C1F45
950
#12132B

Contrast Checker

Text on white

4.75:1

AA Pass AAA Fail

Text on black

4.42:1

AA Fail AAA Fail

Related Articles

Tutorials

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

1월 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

1월 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

1월 15, 2026