> ## Documentation Index > Fetch the complete documentation index at: https://archie.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Color > Set your primary color and neutral tone — Archie generates the full set of semantic roles, contrast-checked, in light and dark. Color asks for a few high-level decisions and generates the rest. You do not hand-pick every shade in the palette — you set the primary color and the neutral temperature, and Archie derives a complete, contrast-checked set of semantic color roles for both light and dark mode. ## Primary The action color for your app — used for primary buttons, links, and other elements that mean "do this." Set separately for **Light** and **Dark**, each as a hex value. ## Neutrals Neutrals are the grays used for backgrounds, borders, and body text — the colors that show up everywhere but are never the star. Choose the temperature: * **Cool** — feels technical. * **Neutral** — balanced, no strong lean. * **Warm** — feels human. Color panel showing Primary color pickers for light and dark, and the Neutrals temperature control ## Advanced editing Click **Edit the full palette** to open every generated semantic color role directly — surface, content, status colors, and so on — instead of deriving them from Primary and Neutrals. Use this when the automatic derivation gets close but you need to nudge a specific role. ## FAQ You can, through **Edit the full palette**. The Primary + Neutrals flow exists because deriving a full, accessible palette from two decisions is faster than picking a dozen shades by hand, and Archie checks contrast for you along the way. Yes — the generated roles are contrast-checked in both light and dark mode as part of generation.