#C3CED8 Hex Color

Illusion Blue functions as a distinctly cool neutral because of its strong blue base, though it remains soft rather than icy. The grey desaturation pulls back the intensity, allowing it to bridge the gap between architectural coldness and comfortable, readable UI backgrounds.

Pair #c3ced8 with a deep charcoal for text to maximize that 13.1:1 contrast ratio while keeping the aesthetic soft and modern. To introduce warmth, add a muted terracotta accent to ground the cool blue tones without overpowering the design.