For software rendering only.
You can more precisely define how an input value (value, point, color) remaps to a new output value. These three color utility nodes have gradient attributes that give you far greater control over remapping than what Ramp textures provide.
With these utility nodes, you can (for example):
These three utilities work well with the test range feature. See Test textures (and texture ranges).
To use the Remap Color, Remap Hsv, or Remap Value color utility
For descriptions of these range attributes, see Input and Output ranges.