Basics - 404 Error Page
Project Rationale: 404 Error Page for "Basics"
Platform Overview
Basics is a personal finance application designed specifically for people with little to no financial knowledge.
Design Philosophy
When users encounter an error on a financial platform, their immediate concern is often "Is my money safe?" This 404 page addresses that anxiety head-on while maintaining the brand's friendly, educational voice.
Visual Design Decisions
Graph Flatline Concept
I chose a data visualization metaphor for the 404 illustration rather than generic imagery like piggy banks or coins. The wavy line that flatlines at "404" accomplishes several goals:
- Reinforces platform identity: Basics is about tracking and understanding your financial data. Using a graph as the error state visual reinforces that this is a data-driven platform.
- Sophistication without intimidation: The clean, minimal graph feels professional but not corporate, striking the balance our audience needs.
- Unique approach: Most 404 pages use literal objects or mascots. A data visualization metaphor stands out while staying on-brand.
Dark Theme
The dark background [#1a1f2e] was an intentional choice:
- Reduces visual noise: Dark interfaces minimize distractions, helping anxious users focus on the essential information.
- Modern and trustworthy: Dark themes convey sophistication and security, building confidence in the platform.
- Eye comfort: For users spending extended time budgeting or reviewing finances, dark mode reduces eye strain.
Color Palette
The teal accent color [#00D9A3] serves multiple purposes:
- High contrast: Against the dark background, teal ensures critical elements (the reassurance message, primary button) are immediately visible.
- Emotional association: Teal/green conveys growth, safety, and positivity - important psychological cues for financial beginners.
- Brand consistency: The color is pulled directly from the Basics logo, maintaining visual coherence.
Content & Clarity
Headline: "We lost this page 🤦"
Rather than technical language like "404 Error" or "Page Not Found," I used conversational phrasing that:
- Takes ownership of the mistake ("We lost") rather than blaming the user
- Uses an emoji to add humanity and reduce tension
- Feels like a friend admitting an error, not a system failure
Immediate Reassurance: "But your money? Safe and sound."
This line is critical. Positioned prominently in the brand's teal color, it:
- Addresses the primary user concern before they even ask
- Uses conversational language ("But your money?" mirrors how people actually think and speak)
- Provides instant relief through color coding and placement
Body Copy: "The page you're looking for doesn't exist (we know, it's annoying). But here's what you can do:"
This explanation:
- Validates user frustration with parenthetical empathy
- Uses plain language accessible to anyone, regardless of technical literacy
- Transitions to solutions rather than dwelling on the problem
Scannability & Information Architecture
The page follows a clear F-pattern visual hierarchy:
- Visual anchor: The 404 graph immediately draws the eye and establishes context
- Headline: Large, white text announces the situation
- Key reassurance: Color-coded teal message stands out as the most important information
- Explanation: Gray body text provides context without overwhelming
- Primary action: Bright teal button is the obvious next step
- Secondary options: Clearly labeled alternative paths
Whitespace Strategy
Generous spacing between each section prevents cognitive overload - crucial for users who may already feel stressed about encountering an error on a financial platform.
Functional Elements
Primary CTA: "← Back to home"
- Directional arrow provides clear visual guidance
- Plain language ("home" not "dashboard") is universally understood
- High contrast button makes the action unmistakable
Secondary Navigation: "OR TRY THESE:"
Provides multiple pathways without cluttering the primary action:
- My Dashboard: For users who want to return to their main workspace
- Learning Center: Reinforces that Basics is educational, not just transactional
- Get Help: Acknowledges some users may need human assistance
Footer Context
The brief platform description serves users who may have landed on this page from an external link, explaining what Basics does and building trust even in an error state.
Responsive Design
The mobile version maintains all desktop functionality while adapting to smaller screens:
- Consistent visual hierarchy
- Touch-friendly button sizes (minimum 44px height)
- Readable text without zooming
- Maintained color contrast ratios
Tools used
From brief
Topics
Share
Reviews
5 reviews
Great work! keep going
Great work! This is really in depth, I'm happy to see you describing your design rationale here and including responsive design!
It's also extremely clear what kind of product this 404 page is for and does awesome at providing that user with alternative CTAs to point them toward other actions on the site. The copy "We lost this page. But your money? Safe and sound." works really well to establish trust and convey brand voice. Awesome job!
Really well done, Yael.
I like how you described the entire process of creating this page in detail.
I’m curious about how you came to this conclusion: “When users encounter an error on a financial platform, their immediate concern is often ‘Is my money safe?’” Did you discover this through user research, or was it based on another source or personal observation?
I also really like the copy on your page and how clearly you guide the user toward specific actions. Great work!
Congrats, Yael, you did an excellent job. It's a very creative way to show the user the URL doesn't exist and quickly prompt them to take action.
When I opened the Codepen link here, I couldn't see the page properly (maybe it's something with my browser), and I'm wondering if the "Safe and sound" is clickable or not, and if so, where it would take the user.
Great job!
Okay, I checked out the project and honestly? This is really solid work.
- Reassurance message – "But your money? Safe and sound." in teal is spot on. Exactly what users need to hear first on a financial platform.
- Communication tone – "We lost this page" sounds like talking to a human, not a corporation. For people without financial knowledge, this is super important.
- Graph as illustration – Fresh approach. Not another sad robot, but something that's on-brand and doesn't infantilize the user.
- Hierarchy – Everything guides the user naturally downward: illustration → headline → reassurance → CTA. Zero confusion.
- Mobile version – Scales beautifully, everything stays in place.
- Primary CTA - Detail that impressed me "← Back to home" – with arrow, simple, clear, needs no explanation. Exactly what's needed in a stressful moment.
Things to consider (but the project is solid anyway): Dark mode as default for beginner users, number of secondary options, footer description length. These are more topics for testing than actual design flaws.
Really good work. You can tell every decision was thoughtful and had its "why" behind it. 👏😊
You might also like

Build a Product Roadmap

Re-design | Farapi's landing page

Monday.com Color System

User Persona

Redesigning KickBrain: Trivia Mobile Game

















