#3F78AE

#3F78AE

Color Values

HEX

#3F78AE

RGB

63, 120, 174

HSL

209.2, 46.8%, 46.5%

HSV

209.2, 63.8%, 68.2%

CMYK

63.8%, 31.0%, 0.0%, 31.8%

OKLCH

0.5585 0.1036 249.0

Properties

Cool Dark Nearest: steelblue

Color Harmonies

Complementary

#3F78AE

#AE753F

Analogous

#3FAEAD

#3F41AE

#3F78AE

Triadic

#3F78AE

#AE3F78

#78AE3F

Split Complementary

#3F78AE

#AE3F41

#AEAD3F

Tetradic

#3F78AE

#AD3FAE

#AE753F

#41AE3F

Color Blindness Simulation

Original

#3F78AE

Protanopia

#5858A1

Deuteranopia

#54509E

Tritanopia

#429794

Achromatopsia

#707070

CSS Usage

background-color: #3F78AE;
color: #3F78AE;
border-color: #3F78AE;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F4F7FA
100
#E6EDF4
200
#CBDCEC
300
#A5C3DE
400
#74A2CD
500
#4481BB
600
#366796
700
#2B5378
800
#22415E
900
#1C3145
950
#121F2B

Contrast Checker

Text on white

4.66:1

AA Pass AAA Fail

Text on black

4.51:1

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