#3F45A2

#3F45A2

Color Values

HEX

#3F45A2

RGB

63, 69, 162

HSL

236.4, 44.0%, 44.1%

HSV

236.4, 61.1%, 63.5%

CMYK

61.1%, 57.4%, 0.0%, 36.5%

OKLCH

0.44 0.148 275.7

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#3F45A2

#A29C3F

Analogous

#3F76A2

#6B3FA2

#3F45A2

Triadic

#3F45A2

#A23F45

#45A23F

Split Complementary

#3F45A2

#A26B3F

#76A23F

Tetradic

#3F45A2

#A23F76

#A29C3F

#3FA26B

Color Blindness Simulation

Original

#3F45A2

Protanopia

#42428C

Deuteranopia

#414186

Tritanopia

#3F7A76

Achromatopsia

#4A4A4A

CSS Usage

background-color: #3F45A2;
color: #3F45A2;
border-color: #3F45A2;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CCCDEB
300
#A7AADD
400
#777CCA
500
#474EB8
600
#393F93
700
#2E3276
800
#24275C
900
#1D2044
950
#12142B

Contrast Checker

Text on white

8.13:1

AA Pass AAA Pass

Text on black

2.58:1

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