Cyan needs air
When an entire page is saturated cyan, the color quickly loses its glow. A more effective system keeps vivid cyan for edges, focus, and brief feedback, surrounded by sky blues and cloud whites with subtle temperature shifts.
Day mode uses the clarity of noon. Night mode keeps the same cyan light source so both worlds still belong to one identity.
What the violet is for
Violet appears only in refraction, distant shadow, and interaction highlights. It is not a second primary color; it is a reminder that this sky carries a little fantasy.