The choice of blues and sea greens, has a strong association with the sea and maritime themes. These colors reflect the natural beauty of oceanic environments and convey a sense of tranquility, depth, and serenity that is often connected to nautical experiences.

The use of various shades within this color palette allows for visual diversity while maintaining a unifying theme across all six logos.

By using this consistent color palette across all six logos, the concept achieves visual cohesion and unity, allowing these diverse nautical symbols to come together as a harmonious set.