ColourPop Koala is a moderately cool-toned, medium lavender with a matte finish. It is a limited edition lipstick that retails for $6.50 and contains 0.11 oz.
ColourPop Koala Ultra Matte Liquid Lipstick ($6.00 for 0.11 fl. oz.) is described as a "vibrant pastel lavender." It is a brightened, lavender purple with cool undertones and a very matte finish. The consistency was a little thinner, and it had a tendency to streak while applied. It dried down very quickly, and there was noticeable flaking after four hours of wear until it was somewhat patchy at the six-hour mark. The formula was a little drying overall. Urban Decay Vanity Kills (DC, $18.00) is lighter, cooler (90% similar). MAC Lavender Jade (P, $21.00) is lighter, less glossy (90% similar). ColourPop Brills (LE, $7.00) is warmer, glossier (90% similar). MAC Strutting Fabulous (LE, $19.00) is darker, glossier (90% similar). Urban Decay Shallow (DC, $18.00) is darker, glossier (85% similar). Rare Beauty Daring (P, $20.00) is darker, warmer (85% similar). ColourPop Lemon Drop (LE, $6.50) is darker (85% similar). MAC Weekend 2 (LE, $21.00) is lighter, glossier (85% similar). MAC Kawaii Party (LE, $18.50) is warmer (85% similar). ColourPop Boa (P, $6.00) is lighter, warmer (80% similar). MAC Plum Princess (LE, $21.00) is darker, more muted, glossier (80% similar). Fenty Beauty One of the Boyz (P, $18.00) is darker, cooler (80% similar). See comparison swatches / view dupes side-by-side.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.