Suitable gradient colors for posters

Quick answer：

When choosing gradient colors for posters, it's important to consider colors that are visually appealing, legible, and convey the intended message or theme. Popular gradient color palettes often include a mix of contrasting colors, complementary shades, or monochromatic tones with subtle variations. For instance, a vibrant blue to purple gradient can be eye-catching, while a soft green to blue gradient can evoke a sense of calm. It's also crucial to balance the brightness and saturation of the colors to ensure they work well together and are not too harsh on the eyes.