M.3color3 !!link!!

: In Magic: The Gathering, players often discuss "3 color, 3 cost" cards or commanders as "on rate" for gameplay balance.

Let ( G = (V, E) ) be an undirected graph. A proper 3‑coloring is a function ( c: V \to 1,2,3 ) such that for every edge ( u,v \in E ), ( c(u) \neq c(v) ). The decision problem 3‑COLOR is: Given G, does a proper 3‑coloring exist? m.3color3

/* Generated shades using relative color syntax (modern CSS) / :root --c1-light: color-mix(in srgb, var(--c1) 70%, white); --c1-dark: color-mix(in srgb, var(--c1) 70%, black); / Repeat for c2, c3... */ : In Magic: The Gathering, players often discuss