#3A1E9E purple, #0B3080 blue, #070A1A black, top down. Less purple than the
two-stop version, because the purple is a third of the sweep rather than half.
🔴 One card colour against three stops has to lift off all three. #0E1745
looked right against the purple and the blue and measured 1.15:1 against the
black end — a card that disappears at the bottom of a long screen. #141C52
lifts 1.41 / 1.33 / 1.23.
The palette test checks the middle stop too. A three-stop gradient checked only
at its ends is two thirds measured, and the middle is where most of a screen
actually sits.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
