The best alternatives to One-HEX are Colorion, Pandacolors, and mybrandnewlogo. If these 3 options don't work for you, we've listed a few more alternatives below.
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Universal-2 by AssemblyAI— Speech-to-Text API for conversational data
The random Color tool helps to generate a random colour whenever you open a randomcolor website. You click on the button, random colours generate a random colour. You also copy colour with the help of the copy button.
It was really hard for me to find the colors of HBCUs when creating marketing materials, so I created a tool that to find the hex colors of any HBCU and copy. HBCUs are Historically Black Colleges and Universities founded before 1964.