RGB/Hex Colour Game
This simple color game presents the player with up to six coloured squares and an RGB value. They player then has to pick the square that matches the RGB or Hex value. There’s an easy (3 colours) and hard (6 colours) mode too, so you can vary the challenge of the game.
You can play the game here: https://geekpulp.co.nz/apps/colour-game/index.html