Color Convert

RGB (0-255):
R: G: B:
RGB (0%-100%):
R: G: B:
RGB (00-ff):
R: G: B:
RGB (HTML/CSS):
HTML/CSS:
CMY (0-255):
C: M: Y:
CMY (0%-100%):
C: M: Y:
HSV (360°/100%/100%):
H: S: V:
HSL (360°/100%/100%):
H: S: L:
Slippy's HSIL (Hue/Saturation/Illuminosity*) (360°/100%/100%):
H: S: I:

* Illuminosity (in the "HSIL" context) is the amount of light coming from this color compared to the maximum amount possible (pure white). It is calculated as the percentage fraction of the red, green, and blue values combined to 100% red, green, and blue. The saturation value is how much color is present out of the total possible for that illuminosity, making it the same as saturation in HSL. Note that color spaces are not taken into account.
I came up with this metric to make it easier to find colors of similar visual brightness that are evenly spaced on the color wheel.