123,15,255
#
in steps
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000000
0000ff 0000ff
0000ff
00007f 00007f
00007f
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007f00
007f7f 007f7f
007f7f
1e03ff 1e03ff
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3d07ff 3d07ff
3d07ff
00ffff 00ffff
00ffff
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7f007f
5c0bff 5c0bff
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d81bff d81bff
d81bff
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
f71fff f71fff
f71fff