[css-color] blend() percentages are inverted?

[jonathantneal]

Are the instructions for blending colors inverted?

According to the color-mod() spec:

color-mod() = color( [ <color> | <hue> ] <color-adjuster>* )

The first argument specifies the base color... After the base color, zero or more <color-adjuster>s can be specified. Each <color-adjuster> modifies the color in some way, passing a new base color to the next <color-adjuster> in the list.

Then later, according to the blend() spec:

blend( <color> <percentage> [rgb | hsl | hwb]? )

To determine the resulting color... linearly interpolate each of the channels of the colors according to the given <percentage>, where 0% produces the specified <color> and 100% produces the base color.

This seems backwards. For example:

color-mod(blue blend(red 100%))

In this example the base color is blue and is blended with red at 100%, which produces ... blue?