Hela is not limited to colors - but you seem to have a good grasp on the basic differences. You can have a luma tago and a hela tago. Luma means there's a lot of light. Hela means it's "bright" (which means a lot of light) or that it's "light" in the sense of having white mixed in - like light grey.

Check out the definitions in PIV. Hela is defined essentially the same as luma with a few secondary definitions added on.

Hela is not limited to colors - but you seem to have a good grasp on the basic differences. You can have a luma tago and a hela tago. Luma means there's a lot of light. Hela means it's "bright" (which means a lot of light) or that it's "light" in the sense of having white mixed in - like light grey.

Check out the definitions in PIV. Hela is defined essentially the same as luma with a few secondary definitions added on.

luma

1. Daŭre lumanta

hela

1. Donanta aŭ ricevanta fortan vivan lumon
2. Enhavanta multe da blanko (hela ruĝo)
3. Vigle, akute sonora (hele sonantaj trumpetoj)