#664CB2

#664CB2

Color Values

HEX

#664CB2

RGB

102, 76, 178

HSL

255.3, 40.2%, 49.8%

HSV

255.3, 57.3%, 69.8%

CMYK

42.7%, 57.3%, 0.0%, 30.2%

OKLCH

0.497 0.1554 291.5

Properties

Cool Dark Nearest: NCS S 2050-R70B Violet

Color Harmonies

Complementary

#664CB2

#98B24C

Analogous

#4C65B2

#994CB2

#664CB2

Triadic

#664CB2

#B2664C

#4CB266

Split Complementary

#664CB2

#B2994C

#65B24C

Tetradic

#664CB2

#B24C65

#98B24C

#4CB299

Color Blindness Simulation

Original

#664CB2

Protanopia

#5B5B99

Deuteranopia

#5C5E93

Tritanopia

#658682

Achromatopsia

#595959

CSS Usage

background-color: #664CB2;
color: #664CB2;
border-color: #664CB2;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F6F5FA
100
#EAE7F3
200
#D4CDEA
300
#B6A9DA
400
#8E7BC7
500
#664CB3
600
#523D8F
700
#423172
800
#332659
900
#281F42
950
#19142A

Contrast Checker

Text on white

6.48:1

AA Pass AAA Fail

Text on black

3.24:1

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