Every designer has shipped a blue that looked like the Atlantic on screen and arrived from the printer looking like a parking lot. This is the story of how Coastal Dusk didn't.
RGB blues are the biggest liars in the gamut. A saturated screen blue like #2A5FD0 sits well outside what coated CMYK stock can reproduce, so the press quietly desaturates it. If your palette's identity lives in that blue, it dies on paper.
Proof in the medium, not the mockup
We build every palette twice: once in OKLCH for screens, once converted through a GRACoL profile for print. The five swatches only ship when both versions still read as the same family.
A palette isn't five colors. It's five colors that survive every medium you'll use them in.
The three checks we run
Gamut check. Every hex converted through GRACoL2013; anything drifting more than 5 ΔE gets re-picked.
Contrast check. All 20 swatch pairings tested for text use; passing combos ship in the guide.
Desk-printer proof. The swatch sheet is printed on an uncalibrated office inkjet — the worst case your buyer owns.
The result: the harbor blue you see in the product preview is within 3 ΔE of what a decent office printer produces. Not identical — nothing is — but unmistakably the same palette. That's the bar every Digisperse palette clears before it's listed.