Question

I have an application where the user can type in a color name, say blue, once he/she has done that, a div will turn into that color.

The code is pretty simple at the moment:

<div class="colorBox" style="background-color: <%= color.name %>;">
</div>

Is it possible to check whether or not that particular color exists?
At the moment I can only think of one solution:

Loop through a list of color names, like this one, but isn’t there a more elegant way? E.g

CSS.exists("blue")
=> true

Also, I don’t want the user to enter a color hex.

Answer 1

The Color gem/Color::CSS is what you want:

Returns the RGB colour for name or nil if the name is not valid.