#3F37C7

#3F37C7

Color Values

HEX

#3F37C7

RGB

63, 55, 199

HSL

243.3, 56.7%, 49.8%

HSV

243.3, 72.4%, 78.0%

CMYK

68.3%, 72.4%, 0.0%, 22.0%

OKLCH

0.4497 0.2129 276.0

Properties

Cool Dark Nearest: Purple Heart

Color Harmonies

Complementary

#3F37C7

#BFC737

Analogous

#3777C7

#8737C7

#3F37C7

Triadic

#3F37C7

#C73F37

#37C73F

Split Complementary

#3F37C7

#C78737

#77C737

Tetradic

#3F37C7

#C73777

#BFC737

#37C787

Color Blindness Simulation

Original

#3F37C7

Protanopia

#3C3BA4

Deuteranopia

#3C3D9C

Tritanopia

#3F8983

Achromatopsia

#434343

CSS Usage

background-color: #3F37C7;
color: #3F37C7;
border-color: #3F37C7;
Nearest Tailwind: Indigo 700 #4338CA

Tailwind Shades

50
#F4F4FB
100
#E5E5F6
200
#C9C7F0
300
#A39FE5
400
#716BD6
500
#3F37C8
600
#332CA0
700
#282380
800
#201C64
900
#1A1849
950
#110F2E

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