Springline Identity & service system

Nothing is opaque.

Springline supplies water to 340,000 households in Devon. The look is 2007 again: gloss, bubbles, a hyper-blue sky, and the one rule keeps it from being nostalgia: every panel is translucent, so you can always see the layer beneath. A utility that hides what is underneath is the thing people already distrust about utilities.

Client
Springline (invented)
Place
Exeter, Devon
Style
Frutiger Aero revival
After
Windows Vista and Aero, 2007; the 2023 revival
Type
Nunito and Nunito Sans
Panel
30% white, gloss on the top 45%
01

A drop and the word

One glossed sphere with the highlight on the top 42%, the same proportion the panels use. The mark is the only fully opaque object in the system, because it is the one thing that must never be read through.

Springline
App icon
In lineSpringline
One colour · vehicleSpringline

The mark, and the two reductions it is allowed

The gloss
Top 42% of the sphere, white to transparent, no second highlight. One light source, above and slightly forward, on every glossed object in the system.
Opaque
The only opaque element. If the mark were translucent it would change colour depending on what was behind it, which for a utility mark on a van is not acceptable.
One colour
Flat #0B4A6B for vehicles, uniforms and anything embroidered. Gloss does not survive a stitch count.
Never
Never a wave, never a splash, never a droplet with a face. The sphere is a drop and a lens at once, and that is the whole idea.
02

Stack the panels and read through them

Every panel is 30% white with a blur behind it. Switch them on: they overlap, and the text on each stays readable because the recipe was set once against the worst case rather than tuned per screen.

SupplyNormal. Last sample 06:00 today.
Pressure2.4 bar at the boundary.
WorksAlphington main, until 14 March.

Three panels, each readable over the others

Panels
Panels3
Fill30% white
GlossTop 45%
Worst contrastn/a

 

The recipe
30% white fill, 6 px blur behind, a one-pixel white edge and a gloss on the top 45%. Four values, written down, used everywhere.
Worst case
Type is checked against the darkest sky in the system with two panels stacked over it. If it holds there it holds anywhere, so no screen needs its own judgement.
Reduced transparency
Where the operating system asks for it, every panel becomes solid white. The layout does not change, so nothing reflows and nothing is lost.
Depth limit
Two panels deep. Three translucent layers over each other stops reading as depth and starts reading as fog.
03

Sky, deep, and two signals

The blue does the brand and nothing else has to. Green and amber exist only to say whether something is fine or is not, which on a water bill is the only question.

Sky#B7E2F6 → #DFF1FBThe ground on every screen. Lighter at the bottom, always.
Deep#0B4A6BThe mark, buttons and every heading over 30 px.
Leaf#3E9B57Supply normal. Nothing else is ever green.
Amber#C6741AWorks, restrictions, a missed reading. Never red: red is for a burst main and there is a separate system for that.
04

Rounded, and set large

A humanist sans with soft terminals, because the bill is read by everybody and the tone has to survive being a demand for money. Numbers are set enormous and everything else gets out of their way.

Figure
Nunito 800
£41.20
Heading
Nunito 800
Your supply is normal
Body
Nunito Sans 400
We sample the Alphington reservoir twice a day. The last sample was taken at 06:00 today and every result is published, including the ones we would rather not publish.
Label
Nunito Sans 700
Meter 8841 220 · read 04 Mar
05

Applications

The app, a bill, a van and a card. The bill is the test: gloss and bubbles have to survive being the least welcome envelope of the month.

SpringlineEX4 1QT
2.4 bar at your boundary
SupplyNormal
Works nearbyAlphington
Last sample06:00
Report a problem

App · every panel translucent

Springline
Dan Trewin · Network technician Exeter depot · 0800 000 000

Card, 85 × 55 mm

SpringlineBill · Mar 2026
£41.20 for 1 January to 28 February
Water supplied18.4 m³
Wastewater16.9 m³
Standing charge£9.40
Meter 8841 220Read 04 Mar
Pay by 28 March · springline.co.uk/pay

Bill, A4 · the figure first, the reason under it

Springline
Network · 0800 000 000

Vehicle · the flat one-colour mark

SpringlineSupply · Bills · Report

Your water, and where it came from this morning.

Every sample we take is published, including the failures.

Check your postcode
Normal Alphington reservoir Sampled 06:00 today 2.4 bar at the boundary

Website

06

Voice

People do not choose their water company, so warmth without substance reads as management speak. Everything says what happened, when, and what is being done.

Say

Alphington main, closed until 14 March. Water is on; pressure is lower.

What, until when, and what it means for the person reading.
Not

We are working hard to improve your service.

No date, no location, nothing anybody can plan around.
Say

Two samples failed in February. Both were re-tested within four hours.

Publishes the failure and the response, which is the only way the good results mean anything.
Not

Committed to delivering excellence for our customers.

Could be printed on any bill from any utility in the country.
07

What breaks it

This look is remembered fondly and copied badly. Four ways it goes, and the first is the one that turns a system into a nostalgia exercise.

Bubbles as decoration The one that ends it. Bubbles arrive because the reference had them, floating over content and meaning nothing. In this system a sphere is the mark; scattering unmarked spheres makes the mark just another bubble.
Your bill is £41.20
Translucent type The panel is translucent so the text follows. Text is the one thing that is always opaque; a bill you can see through is a bill somebody disputes.
The 2007 button Hard bevel, drop shadow, second highlight. The gloss here is one highlight from one light source; stacking effects is how the revival becomes a costume rather than a language.
A colour for every state Purple for planned work, red for urgent, teal for information. Green means fine and amber means not; adding a third state means somebody has to learn a legend before they can read their own bill.

Springline is invented, built as a portfolio exercise in the Frutiger Aero revival. Exeter, Devon and Alphington are real; this utility, its readings, samples, prices and staff are not, and no figure here should be read as real water-quality data. The visual language is after Windows Vista and the Aero look of about 2007, and the revival of it from about 2023. Those designers are credited as influences only. Part of the One Rule Each series.

Rule

Nothing is opaque except the mark and the type. Every panel is 30% white with a gloss on the top 45%, and it must stay readable over any other panel.