Color wheel, a color palette generator
Create color palettes with the color wheel or image, browse thousands of color combinations from the Adobe Color community.
color.adobe.com
Favicon Checker
A tool to test images as favicons for different browsers, like Chrome, Firefox, Edge, Arc, and including light and dark mode
favio.io
Color Picker
An excellent, open source OKLCH, HWB, HSL, HSV, and RGB color picker.
colorpicker.dev