Kim Hee-soo (; born May 10, 1994), better known as Colde (), is a South Korean singer-songwriter. He debuted in 2016 as a member of the indie duo Off On Off. As a solo artist he has released the extended plays Wave (2018), Love Part 1 (2019), Idealism (2021), and Love Part 2 (2023).
Colde was part of the lineup for the Grand Mint Festival 2020 which took place from October 24-25, 2020 at Olympic Park in Seoul, South Korea.