Notion - Accessibility Color System

Hello Marcelin,

You have delivered a highly detailed and professional color system redesign for Notion, effectively balancing the brand's aesthetic with strict WCAG Accessibility requirements. The documentation of all color categories and clear rationales for your choices are exceptional.

What's Good

🌟 The submission is exceptional in its documentation, strategic thinking, and adherence to accessibility standards.

• The design rigorously confirms WCAG compliance for nearly all color pairings, explicitly showing contrast ratios against their respective backgrounds for Primary, Tertiary, and Neutral colors. This strongly satisfies the Accessibility criterion.
• The choice of blue as the Primary color is well-justified by aligning with Notion’s "cool, calm and collected" brand personality and the color psychology associated with productivity.
• The analysis of the original design's flaws (dull CTA, faint borders) is excellent, and the redesign successfully addresses these by implementing higher contrast for action elements (4.5:1 ratio) while maintaining the aesthetic.

Areas for Improvement

While the project is very strong, the following areas could add nuance and enhance the Visual Design and Presentation of the System.

• The System Colors section notes an intentional "slight contrast reduction in the yellow toast" to keep icons visually consistent, accepting a 2.09:1 ratio. While you acknowledge this is low-severity, falling below the WCAG AA minimum of 4.5:1 for text (or 3:1 for non-text components) on a yellow background could still fail accessibility checks for key messaging.
• The Information State uses Notion's "On Surface" charcoal gray (#2C2C2B). While this reinforces brand identity, using a distinct color would differentiate system information from standard text/surface color, making the communication less ambiguous.
• The Tertiary section details the vibrant palette and high contrast ratios but the UI example (Figure 3) primarily shows the neutral navigation.