#3F54B2

#3F54B2

Color Values

HEX

#3F54B2

RGB

63, 84, 178

HSL

229.0, 47.7%, 47.3%

HSV

229.0, 64.6%, 69.8%

CMYK

64.6%, 52.8%, 0.0%, 30.2%

OKLCH

0.4819 0.1509 270.3

Properties

Cool Dark Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#3F54B2

#B29D3F

Analogous

#3F8EB2

#643FB2

#3F54B2

Triadic

#3F54B2

#B23F54

#54B23F

Split Complementary

#3F54B2

#B2643F

#8EB23F

Tetradic

#3F54B2

#B23F8E

#B29D3F

#3FB264

Color Blindness Simulation

Original

#3F54B2

Protanopia

#48489B

Deuteranopia

#474596

Tritanopia

#408985

Achromatopsia

#565656

CSS Usage

background-color: #3F54B2;
color: #3F54B2;
border-color: #3F54B2;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FA
100
#E6E9F4
200
#CAD1EC
300
#A5AFDF
400
#7484CE
500
#4359BC
600
#354797
700
#2B3979
800
#212C5E
900
#1C2345
950
#11162C

Contrast Checker

Text on white

6.73:1

AA Pass AAA Fail

Text on black

3.12:1

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