Asked • 05/04/19

Why is pure blue darker than pure green?

If I convert 100% green and blue to grayscale, the blue one becomes about twice as dark. I can see that green looks brighter, but I also want to understand reason behind it. Looking at colors in rgb model:* pure blue = 0 red 0 green 255 blue* pure green = 0 red 255 green 0 blueSo why is pure green brighter than pure blue?

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