blend function

colourettu.blend(colour_1, colour_2)

Takes two Colour s and returns the ‘average’ Colour.

Parameters

• colour_1 (colourettu.Colour) – a colour

• colour_2 (colourettu.Colour) – a second colour

Note

Uses the formula:

$$r_{blended}=\sqrt{\frac{r_1^2+r_2^2}{2}}$$

It is shown here for the red channel, but applied independently to each of the red, green, and blue channels. The reason for doing it this way (rather than using a simple average) is that the brightness of the colours is stored in a logarithmic scale, rather than a linear one.

For a fuller explanation, Minute Physics has released a great YouTube video.

See also

Palette.blend()