The hexadecimal color code #21236d is a medium dark shade of blue. In the RGB color model #21236d is comprised of 12.94% red, 13.73% green and 42.75% blue. In the HSL color space #21236d has a hue of 238° (degrees), 54% saturation and 28% lightness. This color has an approximate wavelength of 464.96 nm.
There is no must in art because art is free.
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The holy grail is to spend less time making the picture than it takes people to look at it.
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No great artist ever sees things as they really are. If he did, he would cease to be an artist.
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