Thematic is a library and web application to aid designers in creating color palettes that unify application colors based on a desired look and feel (e.g., corporate branding) while also providing perceptually balanced color palettes and ramps for data visualization within the application. The primary goal is to provide several bindings to common application development and visualization frameworks, so theming across platforms and contexts is simple and consistent across platforms such as Power BI, Office, and web frameworks (React, Fabric, D3, Vega).