The hexadecimal color code #15aa81 is a medium dark shade of green-cyan. In the RGB color model #15aa81 is comprised of 8.24% red, 66.67% green and 50.59% blue. In the HSL color space #15aa81 has a hue of 163° (degrees), 78% saturation and 37% lightness. This color has an approximate wavelength of 507.63 nm.
It is a widely accepted notion among painters that it does not matter what one paints as long as it is well painted. This is the essence of academicism. There is no such thing as good painting about nothing.
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It's not what you look at that matters, it's what you see.
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If I could say it in words there would be no reason to paint.
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