Twilight

Mauve, plum, indigo, deep teal, and pale moonrose.

Later and cooler than dusk — the sky has committed to night but still shows some colour underneath. Mauve and plum up top; indigo and deep teal in the middle; pale moonrose as the last warm thread. Works for evening event branding, dim-mode interfaces, and anything where you want a little romance without leaning into it.