Create gradient for color selection with HTML5 canvas (all possible RGB colors)

Question

Is it possible to greate a linear gradient which contains all possible RGB colors (only red, green, blue - no alpha values) for a linear color picker.

So far I\'ve t

Answer 1

+1 Philipp is spot on. RGB colors are not well represented in 2d space because rgb has 3 components that all must be represented.

The closest you can get to geometrically representing all rgb combinations is a cube (makes sense since a cube has 3 axes and rgb has 3 values).

Here's an illustration from Wikipedia: http://en.wikipedia.org/wiki/RGB_color_space

You could use this as a starting place and use a slider to show each color "layer" from front to back.