#3F45BE

#3F45BE

Color Values

HEX

#3F45BE

RGB

63, 69, 190

HSL

237.2, 50.2%, 49.6%

HSV

237.2, 66.8%, 74.5%

CMYK

66.8%, 63.7%, 0.0%, 25.5%

OKLCH

0.4634 0.186 274.3

Properties

Cool Dark Nearest: slateblue 3

Color Harmonies

Complementary

#3F45BE

#BEB83F

Analogous

#3F84BE

#793FBE

#3F45BE

Triadic

#3F45BE

#BE3F45

#45BE3F

Split Complementary

#3F45BE

#BE793F

#84BE3F

Tetradic

#3F45BE

#BE3F84

#BEB83F

#3FBE79

Color Blindness Simulation

Original

#3F45BE

Protanopia

#4242A1

Deuteranopia

#41419A

Tritanopia

#3F8A85

Achromatopsia

#4C4C4C

CSS Usage

background-color: #3F45BE;
color: #3F45BE;
border-color: #3F45BE;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F4F4FB
100
#E6E6F5
200
#C9CBED
300
#A3A6E1
400
#7176D0
500
#3F45C0
600
#333899
700
#292C7B
800
#202360
900
#1B1D46
950
#11122C

Contrast Checker

Text on white

7.48:1

AA Pass AAA Pass

Text on black

2.81:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026