1. QQ screenshots (the default shortcut key is ctrl+alt+a) can read the RGB information of the corresponding point, which is very convenient.
Figure 1: QQ screenshot color selection
2. Color cheat sheet for multiple code formats (some information is incorrect and is for reference only)
Front-end development: Color code cheat sheet [English color, HEX (hexadecimal) format, RGB format, decimal]https://blog.csdn.net/ weixin_48337566/article/details/123941364
3. Analogous Colors: A color information search engine and information table website
Analogous Colorshttps://www.analogouscolors.com/