#648CB5

#648CB5

Color Values

HEX

#648CB5

RGB

100, 140, 181

HSL

210.4, 35.4%, 55.1%

HSV

210.4, 44.8%, 71.0%

CMYK

44.8%, 22.7%, 0.0%, 29.0%

OKLCH

0.6269 0.0765 249.7

Properties

Cool Light Nearest: steelblue

Color Harmonies

Complementary

#648CB5

#B58D64

Analogous

#64B4B5

#6564B5

#648CB5

Triadic

#648CB5

#B5648C

#8CB564

Split Complementary

#648CB5

#B56564

#B4B564

Tetradic

#648CB5

#B564B4

#B58D64

#64B565

Color Blindness Simulation

Original

#648CB5

Protanopia

#7576AB

Deuteranopia

#7370A9

Tritanopia

#66A3A2

Achromatopsia

#868686

CSS Usage

background-color: #648CB5;
color: #648CB5;
border-color: #648CB5;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F5F7FA
100
#E8EDF3
200
#CFDBE8
300
#ACC2D7
400
#7FA0C2
500
#527FAD
600
#42668A
700
#35516E
800
#293F56
900
#213040
950
#151E28

Contrast Checker

Text on white

3.52:1

AA Fail AAA Fail

Text on black

5.96:1

AA Pass 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