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Color Supply vs Sessions College Color Calculator: catalog facts
Color Supply	Sessions College Color Calculator
Free Used directly in the browser; no pricing is mentioned.	Free Free to use on the Sessions College website.
Web	Web
Visual color wheel for picking combinations Previews palettes on sample shapes	Builds palettes from classic color harmonies Gives hex, RGB and CMYK values for each color
Little documentation on the site No accessibility or contrast checking described	Sits inside a college marketing site with course promotion around it Covers harmonies only, without contrast or accessibility checks
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.