#666E7F

#666E7F

Color Values

HEX

#666E7F

RGB

102, 110, 127

HSL

220.8, 10.9%, 44.9%

HSV

220.8, 19.7%, 49.8%

CMYK

19.7%, 13.4%, 0.0%, 50.2%

OKLCH

0.5375 0.0284 265.4

Properties

Cool Dark Nearest: lightsteelblue 4

Color Harmonies

Complementary

#666E7F

#7F7766

Analogous

#667A7F

#6B667F

#666E7F

Triadic

#666E7F

#7F666E

#6E7F66

Split Complementary

#666E7F

#7F6B66

#7A7F66

Tetradic

#666E7F

#7F667A

#7F7766

#667F6B

Color Blindness Simulation

Original

#666E7F

Protanopia

#696A7B

Deuteranopia

#69687A

Tritanopia

#667877

Achromatopsia

#6E6E6E

CSS Usage

background-color: #666E7F;
color: #666E7F;
border-color: #666E7F;
Nearest Tailwind: Gray 500 #6B7280

Tailwind Shades

50
#F7F7F8
100
#EBEDEF
200
#D7DADF
300
#BBBFC8
400
#969DAB
500
#727A8D
600
#5B6271
700
#494E5A
800
#393D47
900
#2C2F35
950
#1C1E22

Contrast Checker

Text on white

5.12:1

AA Pass AAA Fail

Text on black

4.1:1

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