20 styles, zero design debt
A curated palette of twenty themes — five with dotted outlines — keeps every diagram on-brand without a design review.
Curated, not infinite
Infinite colour pickers produce inconsistent diagrams. o-flow gives you twenty hand-picked themes that always look good together — light fills with saturated borders, plus deep solids for emphasis.
Dotted variants for "soft" steps
Five themes use dotted outlines, handy for optional, planned or external steps. Connectors can be dotted too — perfect for API or integration links.
Readable by default
Text is black on light themes and white on deep ones, automatically, so labels are always legible.