Unfortunately, that doesn't even come close to checking all valid CSS colours - there are many, many, named colours that are completely valid (red, white, green, burlywood, chartreuse, etc.) as well as CSS variables like var(--myColour).
Also, checking if it starts with # really is not enough in the case of hex values.
There's actually a very quick, short way of checking ALL of this... but I won't give it away here just yet
Unfortunately, that doesn't even come close to checking all valid CSS colours - there are many, many, named colours that are completely valid (
red,white,green,burlywood,chartreuse, etc.) as well as CSS variables likevar(--myColour).Also, checking if it starts with
#really is not enough in the case of hex values.There's actually a very quick, short way of checking ALL of this... but I won't give it away here just yet
I thought it is a quick thing. I know it is not 100% correct method. But now I got your point.