Winter

Ice blue, snow white, slate grey, pale lavender, and deep pine.

Crisp, quiet, and cold. Ice blue and snow white do almost all of the heavy lifting; slate grey handles text and structure; pale lavender is the shadow cast across snow in the afternoon; deep pine is the one warm-dark accent, borrowed from fir trees at the edge of the scene. A natural fit for clean SaaS, healthcare, and financial products.