#3F49B8

#3F49B8

Color Values

HEX

#3F49B8

RGB

63, 73, 184

HSL

235.0, 49.0%, 48.4%

HSV

235.0, 65.8%, 72.2%

CMYK

65.8%, 60.3%, 0.0%, 27.8%

OKLCH

0.4654 0.1732 273.6

Properties

Cool Dark Nearest: slateblue 3

Color Harmonies

Complementary

#3F49B8

#B8AE3F

Analogous

#3F85B8

#713FB8

#3F49B8

Triadic

#3F49B8

#B83F49

#49B83F

Split Complementary

#3F49B8

#B8713F

#85B83F

Tetradic

#3F49B8

#B83F85

#B8AE3F

#3FB871

Color Blindness Simulation

Original

#3F49B8

Protanopia

#43439D

Deuteranopia

#434297

Tritanopia

#3F8883

Achromatopsia

#4F4F4F

CSS Usage

background-color: #3F49B8;
color: #3F49B8;
border-color: #3F49B8;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F4F5FB
100
#E6E7F5
200
#CACDED
300
#A4A9E0
400
#727ACF
500
#414BBE
600
#343C98
700
#2A307A
800
#21265F
900
#1B1F46
950
#11132C

Contrast Checker

Text on white

7.35:1

AA Pass AAA Pass

Text on black

2.86:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026