Primary on Canvas
The default reading experience. High contrast, easy on the eyes for long sessions.
Contrast: 13.5:1 — AAA ✓
bg: #0d1117 · fg: #e6edf3
Primary on Surface
Cards and panels. Slightly elevated, still excellent contrast.
Contrast: 11.8:1 — AAA ✓
bg: #161b22 · fg: #e6edf3
Dark on Green
Primary CTA buttons. Bold, clear, action-oriented.
Contrast: 7.2:1 — AAA ✓
bg: #3fb950 · fg: #0d1117
Secondary Text
Descriptions, labels, supporting text. Readable but recessive.
Contrast: 4.6:1 — AA ✓
bg: #0d1117 · fg: #8b949e
Light Mode
For email bodies and print. Classic high-contrast light theme.
Contrast: 15.4:1 — AAA ✓
bg: #ffffff · fg: #1f2328
AI Feature Highlight
Purple accents for AI-powered features. Distinct from standard UI.
Contrast: 6.4:1 — AA ✓
bg: #161b22 · fg: #bc8cff