How to Color Code Google Calendar

Choose a coding system

Before touching a color picker, decide what a color should mean on your calendar. There are three proven systems, and the right one depends on the question you most often ask your calendar.

Code by category

The most common system: every area of life gets one color, permanently. A typical setup looks like this:

Category coding answers "what kind of week is this?" instantly — a Monday that is solid purple is a meeting day, a green-and-yellow Saturday is genuinely yours. The trade-off is that it says nothing about importance: a critical work deadline and a routine work check-in are the same blue. That's why most category systems reserve one extra color (red) purely for the handful of items that truly can't slip.

Code by energy

Instead of asking what an event is, ask what it costs. Deep, saturated colors mark demanding blocks — deep work, difficult conversations, workouts — while light tints mark low-effort ones like admin, commutes, and casual catch-ups. A glance shows whether a day is sustainable: three dark blocks back-to-back is a warning you can see before you live it. The trade-off is that energy coding hides what you're doing; a dark block could be a sprint review or a marathon. It works best for people whose main scheduling problem is burnout, not forgetting which hat to wear.

Code by priority

A single gradient from must-do to flexible: red or deep orange for immovable commitments, mid-tones for things that should happen, the palest shade for events you could reschedule without consequence. When someone asks for your time, you look for the light-colored blocks — those are the ones that can move. The trade-off is honesty: priority coding only works if you resist rating everything a must-do, and it needs a weekly re-check because priorities decay. It suits deadline-driven work better than a life calendar with stable, recurring categories.

Rules that make color coding stick

Most color coding systems don't fail on day one — they erode over weeks. These rules are what separates the systems that survive from the ones abandoned by February.

• Cap it at 7 colors. Past seven, you stop reading colors and start decoding them, which defeats the point. If two categories could plausibly share a color, they should.
• Reserve red. Red is the only color with a built-in meaning, and it only keeps that meaning if it's rare. The moment "gym" is red, "final deadline" red stops registering.
• Color the calendar, not each event. Where a whole category can live on its own calendar (Work, Personal, a shared family calendar), set the color once at the calendar level and every event inherits it. Save per-event colors for exceptions — it's the difference between a system and a chore.
• Have a default for the uncategorized. Something will always defy your categories. Give those events one neutral color (gray works) instead of inventing a new category on the spot — that's how systems bloat.
• Do a 5-minute weekly recolor. While reviewing the coming week, fix anything miscolored or left at the default. Five minutes weekly is what keeps the calendar trustworthy; a calendar you half-trust you soon stop reading.
• Keep the same hex per category, forever. The whole value of color coding is that your eye learns "green means health" and never has to think about it again. This is where saved palettes matter: if your exact hexes live in a named palette, "health green" survives a new laptop, a new semester, and the re-setup you'd otherwise do from memory.

Ready-made color coding templates

You don't have to design a scheme from scratch. Each template below is a complete category system with matched hex codes — start with the one closest to your life and rename categories as needed. All 20 are in the palette library.

Setting it up in Google Calendar

1. Assign calendar-level colors first. In the sidebar, hover over each calendar (Work, Personal, Family), open its options, and set the color for the whole category. Every event on that calendar inherits it automatically.
2. Use event colors for exceptions. Open an individual event and change its color only when it breaks the pattern — the urgent item, the one personal appointment during work hours.
3. Go beyond the built-in set if you want. Google Calendar supports custom colors natively, so your scheme isn't limited to the default swatches. See how custom colors work in Google Calendar for the details.
4. Save the scheme as a named palette. What Google doesn't offer is a way to save your set of colors as a reusable, named palette. The CalPalette Chrome extension adds that: your exact hexes are stored together, so the system survives seasons, re-setups, and — with Pro sync — moves across devices intact. Free saves 4 colors; Pro is unlimited. One honest caveat: CalPalette applies its colors via CSS in your browser, so they're visible to you and other CalPalette users, not to everyone you share a calendar with.

For a deeper look at building the color set itself, see creating a Google Calendar color palette.