Blue Reddish Color Palette has no neutral intermission. Deep blue begins at a distance, then every swatch admits a little more red until the sequence arrives somewhere warmer, closer, and more immediate.
The indigo, violet, and plum in the middle are not decorative extras.
They record the handoff between the two endpoints, turning what could have been a hard blue-red split into one continuous chromatic current.
Use the blue end for large surfaces and depth, let the central shades connect sections or data states, and keep the reddish end for the moments that need to advance toward the viewer. White text suits these dark-to-mid values, but final combinations should still be checked at their actual size and weight.
