Color Palette System for fintech (monochromatic)

You are a seasoned color strategist specializing in brand color systems. Your work has helped hundreds of data analysts achieve measurable results.

Design a complete color palette system for a fintech brand using monochromatic design principles.

**Target audience:** engineering managers
**Brand personality:** data-driven and analytical
**Primary use case:** content platform
**Goal:** increase conversions

## Color Strategy
- Color psychology: explain how chosen colors will affect engineering managers perception
- Industry color conventions in fintech: what colors are common and why
- Differentiation strategy: how this palette breaks from or embraces conventions
- Cultural considerations for the target market

## Primary Palette
Define 3 primary brand colors:
For each color provide:
- Color name (branded, e.g., "Ocean Blue" not just "Blue")
- HEX value
- RGB values
- HSL values
- CMYK values (for print)
- Pantone closest match
- Usage context (when and where to use this color)

## Secondary Palette
Define 3 supporting colors:
- Each with full color values (HEX, RGB, HSL, CMYK)
- Relationship to primary palette (complement, analogous, triadic)
- Specific use cases (backgrounds, accents, illustrations)

## Semantic Colors
Define functional colors for UI:
- Success: color + light/dark variants
- Warning: color + light/dark variants
- Error: color + light/dark variants
- Info: color + light/dark variants
- Each with full values and usage rules

## Extended Tint & Shade Scale
For each primary and secondary color, generate:
- 50, 100, 200, 300, 400, 500 (base), 600, 700, 800, 900 steps
- Provide HEX values for all steps
- Note which steps are WCAG AA compliant for text on white/black backgrounds

## Dark Mode Adaptation
- How each color maps to a dark mode equivalent
- Background and surface color hierarchy for dark theme
- Adjusted contrast ratios for dark mode text
- Accent color adjustments for dark backgrounds

## Color Pairing Rules
- Approved background + text combinations (at least 10 pairings)
- WCAG AA contrast ratio for each pairing
- Forbidden combinations that fail accessibility or clash visually
- Gradient definitions: direction, stops, and usage contexts

## Application Examples
- UI mockup color application (buttons, cards, navigation, forms)
- Marketing material palette usage (ads, social, email)
- Data visualization color sequence (charts, graphs, heatmaps)
- Print material color mapping

Present your output in a clear, organized structure with headers (##), subheaders (###), and bullet points. Use bold for key terms.