#646AC9

#646AC9

Color Values

HEX

#646AC9

RGB

100, 106, 201

HSL

236,4, 48,3%, 59,0%

HSV

236,4, 50,2%, 78,8%

CMYK

50,2%, 47,3%, 0,0%, 21,2%

OKLCH

0,5657 0,1446 278,0

Properties

Cool Dark Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#646AC9

#C9C364

Analogous

#649DC9

#9064C9

#646AC9

Triadic

#646AC9

#C9646A

#6AC964

Split Complementary

#646AC9

#C99064

#9DC964

Tetradic

#646AC9

#C9649D

#C9C364

#64C990

Color Blindness Simulation

Original

#646AC9

Protanopia

#6767B2

Deuteranopia

#6666AC

Tritanopia

#64A09C

Achromatopsia

#707070

CSS Usage

background-color: #646AC9;
color: #646AC9;
border-color: #646AC9;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CACCED
300
#A4A8DF
400
#7379CE
500
#4249BD
600
#353B97
700
#2A2F79
800
#21255F
900
#1B1E46
950
#11132C

Contrast Checker

Text on white

4,72:1

AA Pass AAA Fail

Text on black

4,45:1

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