Hi-Def Cyan is described as a “cyan blue.” It’s a brightened, light-medium blue with a matte finish. It’s part of the permanent PRO range, and I remember buying this, along with the rest of the neon pigments, and discovering just how much work it was to get it to perform half-decently. The texture is very finely-milled but dry, almost chalky, so it doesn’t apply evenly and is difficult to blend. It’s very prone to fading and creasing–within six hours–but leaves a green-ish stain behind. For reference, this shade is “not for use in the lip area” per the warning on the box. Wet ‘n’ Wild A Regular at the Factory #2 (LE, $2.29) is darker. NARS Mad Mad World #1 (P, $24.00) and MAC Electric Eel (P, $15.00) are much darker. MAC Blue Candy (LE, $15.00) is cooler-toned, darker. Make Up For Ever #118 (P, $20.00) is warmer. Inglot #371 (P, $6.00) is darker. See comparison swatches / view dupes.