Orchid (#DA70D6) is a light, moderately saturated magenta hue. Orchid is a bright pink-purple; Radiant Orchid was Pantone's 2014 colour of the year.
In RGB it is made of 218 red, 112 green and 214 blue. Its HSL hue angle is 302° with 59% saturation and 65% lightness, while its perceptual OKLCH lightness is 70% with a chroma of 0.181. For print, a starting CMYK mix is 0% cyan, 49% magenta, 2% yellow and 15% black.
As a text color on white, Orchid has a contrast ratio of 2.89:1, which fails WCAG AA even for large text. On black it reaches 7.27:1 and passes AA for normal text. If you use Orchid as a background, put black (or very dark) text on it. The APCA lightness contrast is Lc 49 for black text and Lc -60 for white text.
Its perceptual complement is #30BC5A, close to kelly green. Colors that look most similar are hot pink, blush, amethyst. People with red-green color blindness see orchid quite differently (ΔE 16), so do not rely on it alone to signal meaning.