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Sessions College Color Calculator vs ColorSpace: catalog facts
Sessions College Color Calculator	ColorSpace
Free Free to use on the Sessions College website.	Free Free to use in the browser.
Web	Web
Builds palettes from classic color harmonies Gives hex, RGB and CMYK values for each color	Many palettes generated from a single input color Gradient generator with up to three colors
Sits inside a college marketing site with course promotion around it Covers harmonies only, without contrast or accessibility checks	Few controls over how palettes are generated No accessibility or contrast checks mentioned
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is 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 23, 2026

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