#3F75B2

#3F75B2

Color Values

HEX

#3F75B2

RGB

63, 117, 178

HSL

211.8, 47.7%, 47.3%

HSV

211.8, 64.6%, 69.8%

CMYK

64.6%, 34.3%, 0.0%, 30.2%

OKLCH

0.5538 0.1116 252.9

Properties

Cool Dark Nearest: RAL 5015 Sky Blue

Color Harmonies

Complementary

#3F75B2

#B27C3F

Analogous

#3FAFB2

#433FB2

#3F75B2

Triadic

#3F75B2

#B23F75

#75B23F

Split Complementary

#3F75B2

#B2433F

#AFB23F

Tetradic

#3F75B2

#B23FAF

#B27C3F

#3FB243

Color Blindness Simulation

Original

#3F75B2

Protanopia

#5657A3

Deuteranopia

#534FA0

Tritanopia

#429895

Achromatopsia

#6E6E6E

CSS Usage

background-color: #3F75B2;
color: #3F75B2;
border-color: #3F75B2;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F4F7FA
100
#E6EDF4
200
#CADAEC
300
#A5C0DF
400
#749ECE
500
#437CBC
600
#356397
700
#2B4F79
800
#213E5E
900
#1C2F45
950
#111E2C

Contrast Checker

Text on white

4.77:1

AA Pass AAA Fail

Text on black

4.4:1

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