Lumo by Proton

The design of Lumo is clean, modern, and highly minimalist, effectively reflecting Proton's brand identity centered around privacy and security. The generous use of white space creates an uncluttered and inviting interface, enhancing readability and focus on the core AI interaction. The primary color palette consists of a dominant white background, dark grey text for contrast, and a vibrant Proton purple/blue as an accent color. This accent is strategically used for the logo, interactive elements like buttons and links, and key privacy icons, adding a touch of brand recognition and visual interest without overwhelming the user. The sans-serif font choice contributes to a professional, approachable, and highly legible experience across all text elements. Usability is excellent due to the intuitive layout, clear calls to action, and the visual reinforcement of privacy features through well-designed icons. Overall, the design successfully communicates trust and ease of use, aligning perfectly with the product's value proposition.