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Heart Lock and Key Coloring Page

Ages 3+ · A4 · free

A heart-shaped padlock with a keyhole, and a key whose handle is also a heart. Few large shapes and strong outlines — one of the quickest pages here, and one that survives a thick crayon without any trouble.

Download PDF 🎨 Colour online 📌 Save to Pinterest

Artwork: created with AI, art direction by Ivan Lukichev

Two ways to colour it

On paper. Print the A4 sheet — the PDF has a QR code in the footer so you can find your way back here.
On a screen. Open the same drawing in Colorful Hearts and tap to fill each area. It works offline and keeps your progress.

Colour it in the app — free on both stores