#646E8C

#646E8C

Color Values

HEX

#646E8C

RGB

100, 110, 140

HSL

225.0, 16.7%, 47.1%

HSV

225.0, 28.6%, 54.9%

CMYK

28.6%, 21.4%, 0.0%, 45.1%

OKLCH

0.5413 0.0486 270.4

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#646E8C

#8C8264

Analogous

#64828C

#6E648C

#646E8C

Triadic

#646E8C

#8C646E

#6E8C64

Split Complementary

#646E8C

#8C6E64

#828C64

Tetradic

#646E8C

#8C6482

#8C8264

#648C6E

Color Blindness Simulation

Original

#646E8C

Protanopia

#686885

Deuteranopia

#686783

Tritanopia

#647F7E

Achromatopsia

#6E6E6E

CSS Usage

background-color: #646E8C;
color: #646E8C;
border-color: #646E8C;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F8
100
#EBECF0
200
#D5D8E1
300
#B8BDCC
400
#9199B0
500
#6A7595
600
#555D77
700
#444B5F
800
#353A4A
900
#292D38
950
#1A1C23

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