color

Package color provides color manipulation and format conversion.

Installing

1. Get package:

   go get -u github.com/gowww/color

2. Import it in your code:

   import "github.com/gowww/color"

Usage

From hexadecimal

To get a Color instance from an hexadecimal representation, use NewHex:

color.NewHex("#004bff")

From RGB

To get a Color instance from red, green and blue values, use NewRGB:

color.NewRGB(0, 75, 255)

To get a Color instance from red, green, blue and alpha values, use NewRGBA:

color.NewRGBA(0, 75, 255, .5)

To hexadecimal

To get the hexadecimal representation of a Color without alpha, use Color.Hex:

color.NewRGBA(0, 75, 255, .5).Hex() // "#004bff"

To get the hexadecimal representation of a Color with alpha, use Color.HexAlpha or Color.AlphaHex:

color.NewRGBA(0, 75, 255, .5).HexAlpha() // "#004bff7f"
color.NewRGBA(0, 75, 255, .5).HexAlpha() // "#7f004bff"