Using Colour Coded Storage to Slash Picking Errors
Share
If you’ve spent any amount of time in a warehouse or a large stockroom, you know the look. It’s a sea of galvanized steel and battleship grey. While that classic industrial look is functional, it can also be incredibly monotonous. And in the world of logistics and inventory management, monotony is the enemy of accuracy.
When every aisle, every rack, and every shelf looks identical, your brain has to work twice as hard to distinguish where one product ends and another begins. This "visual fatigue" is one of the leading causes of picking errors. You think you’re in Aisle 4, Level 3, but because everything looks the same, you’ve actually wandered into Aisle 5.
At IronStor, we believe storage should do more than just hold things: it should help you work smarter. That’s why we’re seeing a massive shift towards colour-coded storage systems. Because we manufacture everything right here in Stoke-on-Trent, we’re able to offer custom storage solutions that use colour to streamline your workflow and slash those costly picking errors.
The Science of Seeing: Why Colour Works
It’s not just about making the warehouse look pretty (though that’s a nice bonus). There is real science behind why colour coding works. Human brains are hardwired to process visual cues like colour significantly faster than text or numbers.
When a picker is looking for a specific item, their brain is scanning the environment for markers. If they are told to look for "Part #4592" on a grey shelf, they have to read every label. If they are told to look for "Part #4592 in the Blue Zone," their brain instantly filters out 75% of the warehouse before they’ve even taken a step.
By layering colour onto your existing alphanumeric system, you’re giving your team a "secondary check." If a picker’s handheld device says they should be at a red shelf but they’re standing in front of a yellow one, the visual mismatch is immediate and jarring. It stops the error before the item ever hits the trolley.
4 Ways to Use Colour to Boost Your Efficiency
You don’t need to paint the entire building, but a strategic use of colour on your shelving and racking can make a world of difference. Here are four practical ways to implement it:
1. Zoning by Product Category
The most common use of colour is to designate different product types. For example, you might use Green for fast-moving consumer goods, Blue for electronics, and Orange for hazardous materials. This helps staff navigate intuitively.
2. Priority Levels
Is there a section of your warehouse dedicated to "Next Day Delivery" or "Amazon Prime" orders? Using a high-visibility colour like Traffic Yellow for these specific bays ensures they are never overlooked and that pickers can identify high-priority zones from across the floor.
3. Vertical Level Coding
In high-bay warehouses, it’s easy for pickers (especially those on reach trucks) to lose track of which level they are on. By powder-coating the shelf edges in different colours: for example, Level 1 is Red, Level 2 is Blue: you eliminate the "squinting at labels" phase of the pick.
4. Safety and Returns
Use Red shelving for damaged goods or "returns to be processed." This prevents unsaleable stock from accidentally being picked and shipped back out to a customer, which is one of the most frustrating (and preventable) errors in retail.
The IronStor Difference: Quality You Can See
Most storage suppliers are just "middle-men." They buy pre-made, value-engineered shelving from overseas and sell it to you in whatever colour happens to be in the container.
At IronStor, we do things differently. Since we’ve been manufacturing since 1984, we handle the entire process in our Stoke-on-Trent facility. This includes our professional powder-coating line.
Why our powder coating matters:
- Durability: Our industrial-grade powder coating is baked on, creating a finish that’s far tougher than standard spray paint. It won't chip or peel under the daily abuse of pallets and trolleys.
- Customisation: Because we make to order, we can match almost any RAL or British Standard colour. Want your shelving to match your corporate branding? We can do that.
- Safety First: Our finishes are designed for high-traffic environments, providing a smooth, easy-to-clean surface that meets ISO9001 quality standards.
How to Conduct Your Own "Colour Audit"
Ready to move beyond grey? You don’t have to overhaul your entire operation overnight. Start with a simple audit of your most common picking errors.
- Identify the "Error Hotspots": Look at your data. Are there specific aisles or levels where mis-picks happen most often?
- Check for "Visual Clutter": Stand at the end of an aisle. If you can’t tell the difference between the "Returns" section and the "Stock" section at a glance, you have a problem.
- Pick Your Palette: Choose high-contrast colours. Don’t use shades that are too similar (like dark blue and black) as they can look the same under warehouse lighting.
- Start Small: Try colour-coding your "Fast Movers" section first. If you see a drop in errors and an increase in pick rates, you’ll know it’s time to roll it out further.
A Healthier, Happier Workplace
Beyond the pure numbers, colour has a psychological impact on your team. A bright, well-organized warehouse feels more professional and less "drab." When staff can find what they need without frustration, morale goes up. And as we all know, a happy picker is an accurate picker.
Whether you're looking for heavy-duty shelving or bespoke racking, think about how a splash of colour could change your bottom line. It’s a simple, high-impact way to bring 21st-century efficiency to your storage.
Ready to upgrade your workflow?
At IronStor, we love a challenge. If you’re tired of the "sea of grey" and want a storage system that actually works for your business, we’re here to help. Because we are the manufacturers, we can design, build, and coat your shelving to your exact specifications.
Talk to our team to understand your options. Call us: 01782 770100, email info@ironstor.co.uk or fill in the form here and one of our team will be in touch.