• ← LUVColor
• → RGBColor

Opacity

Alpha compositing (WMA link)

Opacity[level]

is a graphics directive that sets the opacity to level; level is a value between 0 and 1.

• • Graphics[{Blue, Disk[{.5, 1}, 1], Opacity[.4], Red, Disk[], Opacity[.2], Green, Disk[{-.5, 1}, 1]}]

• • Graphics3D[{Blue, Sphere[], Opacity[.4], Red, Cuboid[]}]

Notice that Opacity does not overwrite the value of the alpha channel if it is set in a color directive:

• • Graphics[{Blue, Disk[], RGBColor[1,0,0,1],Opacity[.2], Rectangle[{0,0},{1,1}]}]