The flag of Nicaragua consists of three horizontal stripes: blue on the top and bottom, and white in the center. In the middle of the white stripe is the coat of arms of Nicaragua. The aspect ratio of the flag is 3:5.

Colors (approximation):

• Blue: Pantone 300 C, HEX #0067C6, RGB (0,103,198)
• White: HEX #FFFFFF, RGB (255,255,255)

The coat of arms features a triangle with five volcanoes, an extensive rainbow, and a Phrygian cap inside a sunburst. While these elements have symbolism, it isn't relevant to your question.