I am not sure what you are aiming at; to me it seems your examples simply are website based on a grid (which basically all sites are...), but where the modular grid is clearly defined by images of coloured boxes. Any search for
If you aim at basically mainly images in a grid, a loose suggestion could be Masonry JS library. Your question is not very specific, so a clarification as to what material you have to work with, what the aim is, where you get stuck would maybe give you a better answer.
Any framework for web will have an alternative of this extremely simple layout. As I do not know what needs you have, wordpress, bootstrap, joomla, boilerplate all have this simple div structure. If you are looking to create this layout from the bottom, any search for "simple css three column" would give you example files. Or, indeed, a search for "example three column web layout".