According to MDN, the list attribute can be used for <input> elements of type color to provide a list of predefined colors. That page also indicates that
hla
x-macros
parfor
surface-controller
influxdb-go
fallback
slony
projection
electron-builder
amazon-marketplace
examplematcher
lowest-common-ancestor
react-snap
react-infinite-scroll-component
resource-monitor
database-sequence
sap-business-technology-platform
android-api-30
asprepeater
reselect
apache-airflow
mvel
ibm-mq
font-awesome-5
event-bus
toolchain
android-database
magmi
ubuntu-12.04
angular-promise