Coloured ASCII by Lorrie Carrington (lc), late 1990’s and early 2000’s. Her work is available in various archives without colour, but they were in colour on her own website. HTML supports millions of colours (although a 256-limit was good for compatibility at the time), so it looks a bit different from classic ASCII and ANSI that uses 8 or 16 colours.
Other ASCII-artists also used HTML-colour. See for example Joan Stark and Allen Mullen. Maybe there was a lot of colourful ASCII that was only preserved without colour…