How do you select an exact color to match? - Photoshop

How do you select an exact color to match?

- Use the eye-dropper tool to sample the color as foreground color.

- Ensure that foreground color square is select.

- Use the brush tool / paint bucket tool / pencil tool for covering the area.

- Alternatively, use Clone Stamp Tool.

- Alt + Click where you want to pick the color from.

- Hold down the mouse button for covering up the new area.