#667EEA Hex Color

#667eea works exceptionally well as a primary call-to-action color or a high-contrast accent in otherwise neutral layouts. Because of its electric saturation, avoid using it as a large background color, as it can overwhelm the user's eyes quickly.

This indigo balances best when paired with muted warm grays or soft off-whites, which help ground its intensity. For a more sophisticated look, use it alongside a desaturated charcoal to let the blue vibrate while keeping the layout readable.