"View more challenges" button contrast between foreground and background colors won't meet WCAG 2 AA contrast ratio thresholds

Steps to Reproduce

1. Go to https://www.topcoder.com/challenges and Login using valid credentials
2. In 'My Challenges' list; check the "View more challenges" button

Expected Result Expected contrast ratio of 4.5:1

• Passes AA, if you change background color to #17171D. New contrast ratio: 4.52
• Passes AA, if you change text color to #737373. New contrast ratio: 4.55

Some people with low vision experience low contrast, meaning that there aren't very many bright or dark areas. Everything tends to appear about the same brightness, which makes it hard to distinguish outlines, borders, edges, and details. Text that is too close in luminance (brightness) to the background can be hard to read.

Actual Result Element has insufficient color contrast of 3.78 (foreground color: #808080, background color: #fafafb, font size: 9.8pt, font weight: normal).

Device: Desktop/Labtop Operating System: Windows Browser: Chrome

WCAG Category: 1. Perceivable WCAG Level: AA WCAG Success Criterion: 1.4.3 Contrast (minimum) Screen Reader Used: N/A Accessibility Audit Tool used: N/A

Attachment https://topcodermsft-my.sharepoint.com/personal/pd-topcoder_topcodermsft_onmicrosoft_com/Documents/Forms/All.aspx?cid=58da9b68%2Df2a3%2D45d2%2Dbbae%2D15abdfd0865b&FolderCTID=0x0120005C598A51049FC14CBA882E1AEE168F51&sortField=Modified&isAscending=true&id=%2Fpersonal%2Fpd%2Dtopcoder%5Ftopcodermsft%5Fonmicrosoft%5Fcom%2FDocuments%2FMSFT%2DTeams%2DQA%2FJune%202019%2F29%20Jun%2FTest%20Results%2FBug%20Videos%20%26%20Log%20Files%2Fcodejam%2DAccessibility%2F9

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