#648BA3

#648BA3

Color Values

HEX

#648BA3

RGB

100, 139, 163

HSL

202.9, 25.5%, 51.6%

HSV

202.9, 38.7%, 63.9%

CMYK

38.7%, 14.7%, 0.0%, 36.1%

OKLCH

0.6169 0.0565 235.9

Properties

Cool Light Nearest: lightslategrey

Color Harmonies

Complementary

#648BA3

#A37C64

Analogous

#64A39C

#646CA3

#648BA3

Triadic

#648BA3

#A3648B

#8BA364

Split Complementary

#648BA3

#A3646C

#A39C64

Tetradic

#648BA3

#9C64A3

#A37C64

#6CA364

Color Blindness Simulation

Original

#648BA3

Protanopia

#75759D

Deuteranopia

#73709C

Tritanopia

#669998

Achromatopsia

#848484

CSS Usage

background-color: #648BA3;
color: #648BA3;
border-color: #648BA3;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F8F9
100
#E9EEF1
200
#D2DDE4
300
#B2C5D1
400
#89A6B9
500
#5F87A0
600
#4C6C80
700
#3D5766
800
#2F4450
900
#25333C
950
#182026

Contrast Checker

Text on white

3.64:1

AA Fail AAA Fail

Text on black

5.76:1

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