Flashing Ruby Signal

#ff0a0a

Notes

Flashing Ruby Signal (#FF0A0A) is a true red with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (0°, 100%, 52%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#ff0a0a

RGB

rgb(255, 10, 10)

HSL

hsl(0, 100%, 52%)