Every Color Has A Name

Select a color, and then find out its name: Name that color.

Being a typical guy, I have no clue what the colors Lavender and Mauve look like. You can show me Indigo and I won't know if it's more like Violet or Purple. So I made this little app where you can create a color on the screen (or copy-paste CSS hex color) and find out the name of the closest matching color.

Here's Yellow Metal, also known as #716338, or RGB(113,99,56):

What about the background color used here to separate the posts by day? That color is called Rhino (approx).