Image Colour Transfer is a free, browser-based application that allows a photo to be colour graded to match the colour of another photo, similar to the “Match Colour” feature found in some commercial photo editing applications.
The following Medium article gives an overview of the processing method and its applications. https://medium.com/@terence.johnson/a-free-touse-web-app-for-image-colour-transfer-processing-9f5b06c760f4
An independent (but highly favourable) review of the web app can be found here. https://petapixel.com/2022/01/12/this-web-app-can-use-one-photos-colors-to-grade-another/
The processing method is an enhancement of the colour transfer method proposed by E Reinhard et al. Facilities are provided to allow comparison between the enhanced and the original methods.
Technical details of the enhanced processing method are provided here. https://github.com/TJCoding/Enhanced-Image-Colour-Transfer-2/blob/main/Documents/Further%20Enhanced%20Image-Colour-Transfer.pdf
The Web App has been designed to primarily operate on a desktop or laptop computer, the speed and practicality of processing will depend upon image size and the computing power of a particular device.
Image Colour Transfer's answer:
See the following review by PetaPixel https://petapixel.com/2022/01/12/this-web-app-can-use-one-photos-colors-to-grade-another/
Color Palette Generator - Enter the URL of an image and find its color palette
Rubek - Rubek is a Single-player and Puzzle video game that is brought to you by Xigma Games.
Random Color Palettes - Generate a random color palette by tapping your space bar
match.color.io - Automatically match colors of any image or movie with ML
Material Palette - Generate and export your Material Design color palette
Colores - Find color palette ideas via image search