Azure (#f0ffff) is a very light, vivid white. It is a CSS named color, so you can use it in stylesheets as color: azure as well as by its hex code. In RGB it is rgb(240, 255, 255); in HSL, hsl(180, 100%, 97%).
The hue is calculated at seven exact lightness levels for use in backgrounds, borders, text and hover states. These values are not substituted with nearby named colors.
#d6ffff
#8fffff
#47ffff
#00ffff
#00b8b8
#007a7a
#004747
Color schemes with #f0ffff
#f0ffff is a neutral: it carries little to no hue, so wheel-based schemes like complementary or triadic would simply return the same gray. Neutrals work differently — use the ramp above for backgrounds, borders and text, and pair #f0ffff with a saturated accent for links, buttons and highlights. Each of these accents reads clearly against #f0ffff:
On a #f0ffff background, black text gives the better contrast. WCAG requires 4.5:1 for normal text and 3:1 for large text (AA), or 7:1 and 4.5:1 for AAA.