Coloratum.

So much to love in Lea Verou’s CSS Coloratum. Convert colors to CSS values.

Whenever I wanted to convert a CSS named color to RGB, I used to open the CSS3 colors spec in a new tab, search in the page and copied the values. Every time it felt even more tedious. I didn’t want to search in long tables, I wanted to type the color somewhere and get the values back, in an easy to copy format. So, after yet another color lookup earlier today, I decided to scratch my own itch and do it myself.

Of course, I didn’t plan to include a whole database of CSS colors in the website. My idea was much simpler: Use the named color to draw a rectangle in a <canvas> and then read the R,G,B values through ctx.getImageData().

Read the rest of her description.