Color should not be the only indicator of the type of alert people are reading, since people with monochromatic color blindness (or even red-green/blue-yellow) would only have to rely on the brightness values of the colors. These values may be very similar between say, "danger" and "success"
Suggested Fixes
You can use more iconography and change the design spec slightly, or you can do what trello does and embed a pattern in the color as a signifier: http://littlebigdetails.com/post/35775193711/trello-color-blind-friendly-mode-makes
Category: #714: Elastic UI Toasts Accessibility
Relevant WCAG Criteria: 1.4.1 Distinguishable: Use of Color
Color should not be the only indicator of the type of alert people are reading, since people with monochromatic color blindness (or even red-green/blue-yellow) would only have to rely on the brightness values of the colors. These values may be very similar between say, "danger" and "success"
Suggested Fixes
You can use more iconography and change the design spec slightly, or you can do what trello does and embed a pattern in the color as a signifier: http://littlebigdetails.com/post/35775193711/trello-color-blind-friendly-mode-makes
Category: #714: Elastic UI Toasts Accessibility
Relevant WCAG Criteria: 1.4.1 Distinguishable: Use of Color