#6661CC

#6661CC

Color Values

HEX

#6661CC

RGB

102, 97, 204

HSL

242.8, 51.2%, 59.0%

HSV

242.8, 52.5%, 80.0%

CMYK

50.0%, 52.5%, 0.0%, 20.0%

OKLCH

0.5521 0.1607 281.9

Properties

Cool Dark Nearest: slateblue

Color Harmonies

Complementary

#6661CC

#C7CC61

Analogous

#6191CC

#9B61CC

#6661CC

Triadic

#6661CC

#CC6661

#61CC66

Split Complementary

#6661CC

#CC9B61

#91CC61

Tetradic

#6661CC

#CC6191

#C7CC61

#61CC9B

Color Blindness Simulation

Original

#6661CC

Protanopia

#6464B2

Deuteranopia

#6464AC

Tritanopia

#669E99

Achromatopsia

#6A6A6A

CSS Usage

background-color: #6661CC;
color: #6661CC;
border-color: #6661CC;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F4F4FB
100
#E6E5F5
200
#CBC9EE
300
#A5A2E1
400
#7570D1
500
#443EC1
600
#37329A
700
#2C287B
800
#221F60
900
#1C1A47
950
#12102D

Contrast Checker

Text on white

5.06:1

AA Pass AAA Fail

Text on black

4.15:1

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