The colour version, but the numbers say the win is narrower than it looks, and it is all in the dimmed state.
I sampled tile fills straight out of your comparison image. On the bright tiles the closest two categories are sports (210,93,26) and movies (197,50,66), ΔE76 34.5 — comfortable. On the dimmed tiles, history (94,76,26) and sports (110,54,27) fall to ΔE76 21.8, and all four dimmed categories sit at L* 25–33, so lightness gives you nothing either. Low-chroma hue is carrying it alone.
Icon contrast goes the same way: dimmed history is 1.67:1 icon-to-fill, against 2.27–2.97 on the bright tiles I sampled and a flat 2.36–2.61 across five tiles on the wooden board. So the dimmed tiles are the one place the colour direction reads worse than the wood it replaces.
Cheapest fix: keep the icon white in both states. On that same dimmed history fill it goes 1.67:1 to 8.1:1, and dimming the fill alone still reads as unavailable.
I sell pixel-art UI packs, so weigh that.