#3F73AA

#3F73AA

Color Values

HEX

#3F73AA

RGB

63, 115, 170

HSL

210.8, 45.9%, 45.7%

HSV

210.8, 62.9%, 66.7%

CMYK

62.9%, 32.4%, 0.0%, 33.3%

OKLCH

0.5447 0.1031 251.4

Properties

Cool Dark Nearest: RAL 5012 Light Blue

Color Harmonies

Complementary

#3F73AA

#AA763F

Analogous

#3FA9AA

#403FAA

#3F73AA

Triadic

#3F73AA

#AA3F73

#73AA3F

Split Complementary

#3F73AA

#AA403F

#A9AA3F

Tetradic

#3F73AA

#AA3FA9

#AA763F

#3FAA40

Color Blindness Simulation

Original

#3F73AA

Protanopia

#56569D

Deuteranopia

#524F9A

Tritanopia

#429290

Achromatopsia

#6C6C6C

CSS Usage

background-color: #3F73AA;
color: #3F73AA;
border-color: #3F73AA;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F4F7FA
100
#E6EDF4
200
#CBDBEC
300
#A6C1DE
400
#759FCC
500
#457EBA
600
#376595
700
#2C5177
800
#223F5D
900
#1C3044
950
#121E2B

Contrast Checker

Text on white

4.95:1

AA Pass AAA Fail

Text on black

4.24:1

AA Fail 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