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
axe">axe
fragmentation
pyyaml
non-ascii-characters
akka-fsm
multicursorediting
mailchimp
matrox
offsite
elasticsearch-highlight
messageformat
wolframalpha
cefpython
react-intersection-observer
android-developer-api
markerclusterer
grpc-gateway
ariadne-graphql
distance
android-layout
google-search
nested-select
nattable
telegraf-output-plugins
no-database
do-catch
datocms
fastboot
splat
log-rotation