#3F40AC

#3F40AC

Color Values

HEX

#3F40AC

RGB

63, 64, 172

HSL

239.4, 46.4%, 46.1%

HSV

239.4, 63.4%, 67.5%

CMYK

63.4%, 62.8%, 0.0%, 32.5%

OKLCH

0.4391 0.1683 276.5

Properties

Cool Dark Nearest: NCS S 2050-R70B Violet

Color Harmonies

Complementary

#3F40AC

#ACAB3F

Analogous

#3F77AC

#743FAC

#3F40AC

Triadic

#3F40AC

#AC3F40

#40AC3F

Split Complementary

#3F40AC

#AC743F

#77AC3F

Tetradic

#3F40AC

#AC3F77

#ACAB3F

#3FAC74

Color Blindness Simulation

Original

#3F40AC

Protanopia

#3F3F92

Deuteranopia

#3F3F8C

Tritanopia

#3F7D79

Achromatopsia

#484848

CSS Usage

background-color: #3F40AC;
color: #3F40AC;
border-color: #3F40AC;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F4F4FA
100
#E6E6F4
200
#CBCBEC
300
#A5A6DE
400
#7576CC
500
#4446BB
600
#373895
700
#2C2C77
800
#22235D
900
#1C1D45
950
#12122B

Contrast Checker

Text on white

8.27:1

AA Pass AAA Pass

Text on black

2.54:1

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