Color Spotlight: Phthalo Blue Red Shade (PB15:6)

Is Phthalo Blue Red Shade actually red-toned, neutral, or still green-toned but simply less so than its cousin Phthalo Blue Green Shade (PB15:3)? I’ve heard all opinions, and I suppose it’s a judgment call. (Is the color blue you see the same as the color blue I see?) My opinion is that it is a … Read more

What’s the difference between Phthalo Blue (Green Shade) and Phthalo Blue (Red Shade)?

Getting from PBGS to PBRS

Phthalocyanine blue (PB15) is an incredibly intense, staining, transparent, non-granulating, lightfast pigment that comes in two versions:

(I’ll call them GS and RS in this post.)

What’s the difference, and which should you choose?

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