Feedback request: tiny browser game for guessing cartoon-inspired palettes

I’m testing a small browser game as an SEO/game experiment: Toon Tone Color.

The core loop is simple: look at a cartoon-inspired palette, adjust an HSB slider, and try to match the target color. It is intentionally lightweight, no account required, and meant to be quick enough to play in a short break.

Link: https://toontonecolor.com/?utm_source=indiehackers&utm_medium=backlink&utm_campaign=toontonecolor_cold_start_202605&utm_content=build_feedback_post

I’m looking for feedback on three things:

1. Is the guessing loop clear within the first 10 seconds?
2. Does the HSB slider feel understandable for non-designers?
3. Would a daily challenge or score history make this more worth revisiting?

This is still an early independent-site experiment, so any notes on clarity, onboarding, or whether the game feels too simple are useful.