Since my early days of painting when I was first introduced to Indanthrone Blue, this color has been an essential blue in my palette. Indanthrone Blue is a strong, deep blue that’s comprised of Pigment Blue 60 or PB60. Because this dark blue is comprised of only a single pigment, it’s a great choice for beginners who can get into muddy trouble when using multi-pigmented dark blues.
Like all watercolors, PB60 can also be labeled by other names like Indanthrene, Anthraquinone, Delft, Indigo, and more. Because I’m a sucker for simplicity, I usually refer to this color as Indie Blue.
Indanthrone Blue (or PB60) is very lightfast, dilutes beautifully, and is highly stable in mixes. It’s also moderately staining, though it has wonderful manners and won’t overpower your palette like many staining colors. It also lifts easily from artist-grade papers, and provides a nice balance to warmer, lighter blues in a palette.
Because I consider this color a keeper, I thought a watercolor comparison of Indanthrone Blue (PB60) might help you pick an indie blue for yourself. Below, I showcase six different PB60 watercolors by five different watercolor manufacturers along with a video of the colors in action.
I also share a PB60 swatch and mixing chart that’s free to download and print for future reference. Read More