#666EB0

#666EB0

Color Values

HEX

#666EB0

RGB

102, 110, 176

HSL

233,5, 31,9%, 54,5%

HSV

233,5, 42,0%, 69,0%

CMYK

42,0%, 37,5%, 0,0%, 31,0%

OKLCH

0,5605 0,1024 277,3

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#666EB0

#B0A866

Analogous

#6693B0

#8366B0

#666EB0

Triadic

#666EB0

#B0666E

#6EB066

Split Complementary

#666EB0

#B08366

#93B066

Tetradic

#666EB0

#B06693

#B0A866

#66B083

Color Blindness Simulation

Original

#666EB0

Protanopia

#696AA0

Deuteranopia

#69689C

Tritanopia

#669391

Achromatopsia

#717171

CSS Usage

background-color: #666EB0;
color: #666EB0;
border-color: #666EB0;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F5F6F9
100
#E8E9F2
200
#D0D2E7
300
#AEB3D5
400
#8389BF
500
#5760A8
600
#454D87
700
#383D6C
800
#2B3054
900
#23263E
950
#161827

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

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