Azure

Azure in CSS is almost pure white with a breath of cyan, not the saturated medieval-manuscript blue the name suggests. The discrepancy traces back to X11's color list, which already had a separate slot for the deeper blue. As a background it reads as cool but barely there, useful for tech-product canvases where pure white feels sterile. The historical association is heraldic, so the word still carries authority even when the rendered color is faint. Darker steel blues or charcoal make for legible type. Two azure surfaces side by side will appear identical in low light.