Canva

Very helpful article! Includes monochrome color palettes with HEX numbers at the end of the article. Canva article: How to design with monochromatic colors—with expert tips from a designer Then convert HEX numbers to RGB (if needed) with color-hex Purple: Deep Purple: #210E3B (33,14,59) Eggplant: #4B194C (75,25,76) Lilac: #872B76 (135,43,118) Violet: #C88EC1 (200,142,193)