12 FORMATS — click any value to edit
HEX
HEX8
RGB / RGBA
HSL / HSLA
CSS Namedclosest
Tailwindclosest
SwiftUI Color
UIColor (Swift)
Jetpack Compose
Android XML
Flutter
React Native
About #3F51B5
#3F51B5 is a medium cool blue. Its RGB value is rgb(63, 81, 181) and its HSL value is hsl(231, 48%, 48%). The closest CSS named color is steelblue and the nearest Tailwind shade is slate-500.
Text on whiteAa
6.87 : 1
Normal AA · Large AAA
Text on blackAa
3.06 : 1
Normal Fail · Large AA