lighten and darken with amount 0 are not returning the original color

[marsonmao]

For example:

      const color = lighten('#ffb537', 0);

and

      const color = darken('#ffb537', 0);

both return #ffb638.

I think it should return the original color?

[ricokahler]

Yeah that's definitely a weird result. I'll take a look later today this week.

My gut says that it's an artifact of parsing to HSL and then back to hex (rounding error?). Maybe there's a way to round there that doesn't cause this.

[ricokahler]

My schedule has been pretty hectic and I haven't really investigated too deeply into this.

Quick pulse check: how important is this issue to you? Do you have a specific use case where this result is undesirable?

Thanks!