Demon slayer equipment....
First off….it looks like you’ve got two slightly different blues there. A darker blue in the top-left box, and a lighter blue in the bottom-right box.
The colour on the underside of the cape is dictated by the bottom-right box, so perhaps you could just switch the two blues? That is, if it’s the underside of the cape that is bothering you.
Or maybe try some of these?
White: 7-1-97 (It’s not really proper white)
Yellow: 9-7-68
L-Blue: 36-3-50
D-Blue: 36-3-27
05-Jun-2014 10:29:42