#666FDF

#666FDF

Color Values

HEX

#666FDF

RGB

102, 111, 223

HSL

235,5, 65,4%, 63,7%

HSV

235,5, 54,3%, 87,5%

CMYK

54,3%, 50,2%, 0,0%, 12,5%

OKLCH

0,591 0,168 276,5

Properties

Cool Light Nearest: royalblue

Color Harmonies

Complementary

#666FDF

#DFD666

Analogous

#66ACDF

#9966DF

#666FDF

Triadic

#666FDF

#DF666F

#6FDF66

Split Complementary

#666FDF

#DF9966

#ACDF66

Tetradic

#666FDF

#DF66AC

#DFD666

#66DF99

Color Blindness Simulation

Original

#666FDF

Protanopia

#6A6AC4

Deuteranopia

#6969BD

Tritanopia

#66AEAA

Achromatopsia

#757575

CSS Usage

background-color: #666FDF;
color: #666FDF;
border-color: #666FDF;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F3F4FC
100
#E3E5F7
200
#C4C7F3
300
#9AA0EA
400
#636CDE
500
#2C39D3
600
#232DA9
700
#1C2487
800
#161C69
900
#14184D
950
#0D0F31

Contrast Checker

Text on white

4,28:1

AA Fail AAA Fail

Text on black

4,9:1

AA Pass AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

فبراير 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

فبراير 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

فبراير 19, 2026