According to Datasheet from Reichelt, my yellow LED has 120mcd... so it should be the right type.
I changed the Resistor to 220 Ohm, and will not further change anymore.
For completeness, say one LED type has a 3.0V forward voltage (so 10% higher) than another type with 2.7V - and lets say its a different color - to get same perceived brightness you may need to double the current with only half the voltage drop over R1. (3.3V-3V = 0.3V vs 3.3V-2.7V = 0.6V). For that case, the R1 value may need to be only 100 Ohm to get the same brightness as a different LED in a different color. Its just an example, but its easy to calculate if you have the LED specs. Also bear in mind the mcd milli-candela spec is the maximum radiation, but mcds are not adjusted for how your eye percieves color. You can of course easily test different R1 values on a breadboard.