#6388AD

#6388AD

Color Values

HEX

#6388AD

RGB

99, 136, 173

HSL

210.0, 31.1%, 53.3%

HSV

210.0, 42.8%, 67.8%

CMYK

42.8%, 21.4%, 0.0%, 32.2%

OKLCH

0.6137 0.0701 249.0

Properties

Cool Light Nearest: steelblue

Color Harmonies

Complementary

#6388AD

#AD8863

Analogous

#63ADAD

#6363AD

#6388AD

Triadic

#6388AD

#AD6388

#88AD63

Split Complementary

#6388AD

#AD6363

#ADAD63

Tetradic

#6388AD

#AD63AD

#AD8863

#63AD63

Color Blindness Simulation

Original

#6388AD

Protanopia

#7373A4

Deuteranopia

#716EA2

Tritanopia

#659D9B

Achromatopsia

#838383

CSS Usage

background-color: #6388AD;
color: #6388AD;
border-color: #6388AD;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F5F7F9
100
#E8EDF2
200
#D0DBE6
300
#AFC2D5
400
#83A1BE
500
#5880A7
600
#466686
700
#38526B
800
#2C4054
900
#23303E
950
#161F27

Contrast Checker

Text on white

3.71:1

AA Fail AAA Fail

Text on black

5.66:1

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