Tools like Figma default to hex (#FFFFFF, etc.) for sharing color values between apps. From a development standpoint, it is much quicker to copypasta a hex value than write out individual rgb values.
If the native TD color picker:
Adding support for inputting hex values would save a lot of conversion time.
I understand this something like this can be written as a component (something I may end up doing anyway), but this just seems like a function that’s more beneficial to include for everyone than not, being as popular as hex is (and it being present in virtually every other app’s native color picker).