Chroma

A daily colour-mixing puzzle from Greatest Games. There is one hidden target shade, a palette of twenty named colours, and three slots to fill. You choose what goes in each slot and how much of it, in 5% steps that have to add up to 100. The catch is that the mixer averages light rather than pigment, so blue and yellow do not make green here, they cancel toward a flat grey.

1. Tap a slot and pick one of the twenty colours on offer.
2. Set the split with the + and − buttons under each slot. Steps are 5% and the three have to total 100 or Submit stays greyed out.
3. Submit. The row comes back with a single accuracy percentage against the hidden target.

Most colour games ask you to recognise a shade. Chroma asks you to build one, and it mixes the way a screen does rather than the way a paint pot does, which quietly invalidates the primary-school rules you have been carrying around. Six rows, one percentage each, 95% to finish. The scoring is unusually explicit for a daily puzzle: 100 points for the solve, up to 75 more for doing it in few guesses, 20 if every guess beat the one before, a point for each day of your streak, and a speed bonus topping out at 35 for finishing inside a minute. New puzzle at midnight Eastern, free, and it plays with no account and nothing to install.

One number per row and nothing else: how close your mix landed, as a percentage. 100% is exact and 95% wins. Nothing tells you whether you were too warm, too pale or too dark, so the only signal is whether the number went up or down after a change. For one target, Olive, Yellow and Brown at 35/35/30 came back at 51.3%, and keeping the same split but swapping Yellow and Brown for Green and Black pushed it to 67%. Above the rows sits a pie chart showing your current proportions against the target's colour, which is the closest thing to a visual clue on offer.

Easy

Three colour slots. The default.

Hard

Four slots instead of three, from the gear icon. Same target colour as Easy, just one more thing to balance, and both feed the same Chroma streak.

• Settle lightness before you argue about hue. The match measure weights value heavily, so a mix in the right colour family but a couple of steps too dark scores worse than it feels like it should.
• Once you are past 90%, stop swapping colours entirely. What is left is proportion, and moving 5% off your heaviest slot has the most leverage on the number.
• The neutrals are not symmetric. White drags a mix pale much harder than black drags it dark, so darkening usually needs a heavy black share or a genuinely dark colour like Navy or Maroon carrying the weight.