Hex Alpha

Get an ARGB color by specifying a hex string and an alpha value. Hecho en 🇵🇷 por Radamés J. Valentín Reyes

Function basics

//Returns an argb value
hexAlpha(String hex,double alpha);

Parameter description

  • The first parameter is a string with a hexadecimal color value
  • The second parameter is a type double number that ranges from 0-1. Where 0 is fully transparent and 1 is fully opaque.


  • Accepts both upper case and lower case Strings in hex value
  • Alpha value is now optional and set to 1 by default
  • Null safety


import 'package:flutter/material.dart';
//Import the package, the line below will be different
import '../lib/hexalpha.dart';
void main(){
  return runApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text(
            "Hex Alpha",
          backgroundColor: hexAlpha('#8f6787', 0.8),
        body: Center(
          child: Icon(
            color: hexAlpha('#ff7373', 1),
            size: 50,