Curvomatic is an online filter database and spectral viewer provided by Chroma Technology, a leading manufacturer of optical filters for fluorescence microscopy. This digital tool allows researchers to explore and select filter sets from Chroma's extensive product catalog. The database provides detailed spectral curves for excitation, emission, and dichroic filters, enabling users to visualize how different filters perform across the electromagnetic spectrum. While it primarily lists Chroma's own filter-sets, its comprehensive nature means it often includes spectral information for many fluorophores, some of which might not be listed in other general spectra viewers. Researchers can use Curvomatic to match filters with specific fluorophores, design custom filter sets for multi-color imaging, and understand the optical properties crucial for optimizing fluorescence signal detection and minimizing crosstalk in complex experiments. It is an essential resource for anyone working with fluorescence microscopy and needing precise control over light filtration.