The flag of Bermuda has an aspect ratio of 1:2. It features a red field with the Union Jack in the upper hoist-side quadrant and the Bermudian coat of arms on a white disc centered on the outer half of the flag.

Color codes:

• Red: Pantone 186 C, HEX #CE1126, RGB (206,17,38)
• Blue (Union Jack): Pantone 280 C, HEX #00247D, RGB (0,36,125)
• White: HEX #FFFFFF, RGB (255,255,255)

Geometric properties and measurements:

• The Union Jack occupies the upper quarter of the hoist side.
• The white disc containing the coat of arms is centered on the outer half of the flag and has a diameter equal to 3/5 of the flag's width.

Please note that these details are approximate and may vary slightly depending on the specific flag manufacturer or source.