Comparison
sRGB vs Display P3
P3 covers around 25% more area than sRGB. Almost all of it is in the reds, oranges and greens; there is very little extra blue.
Short answer. Author in sRGB and reach for Display P3 deliberately, for accents where the extra saturation earns its place — always behind a fallback, because a P3 value on an sRGB screen without conversion is simply the wrong color.
sRGB has been the web's assumed color space since 1996, and its great virtue is that everything can show all of it. Display P3 uses the wider DCI-P3 primaries with the sRGB transfer function and a D65 white point, and it is standard on Apple hardware and increasingly common elsewhere.
The gain is real but uneven. The extra volume sits mostly in saturated reds, oranges and greens — a P3 red is visibly more intense than the reddest sRGB can manage. Blues gain very little, so a brand built on a saturated blue gets almost nothing from the switch.
Using it safely is the whole practical question. A P3 value handed to an sRGB display without conversion renders as a different, usually oversaturated color. CSS handles this cleanly: declare the sRGB value first, then override inside @supports (color: color(display-p3 0 0 0)), or use oklch() with a chroma inside the sRGB gamut and let the browser do the work.
sRGB vs Display P3, side by side
| Dimension | sRGB | Display P3 |
|---|---|---|
| Primaries | sRGB / Rec. 709 | DCI-P3 |
| White point | D65 | D65 |
| Transfer function | sRGB curve | sRGB curve — same |
| Relative gamut area | Baseline | Roughly 25% larger |
| Where the gain is | — | Reds, oranges, greens; very little blue |
| Display support | Universal | All recent Apple hardware, many premium panels |
| CSS | Default | color(display-p3 r g b) |
| Risk of getting it wrong | None | Wrong color on sRGB screens without a fallback |
Where this comparison is unfair
Wider is not automatically better. A saturated P3 accent next to sRGB content can look garish rather than rich, and text set in a highly saturated wide-gamut color is harder to read, not easier. The gain is best spent on a single accent or an image, not on an interface's working palette.
Contrast checking does not change: WCAG relative luminance is defined against sRGB, so a P3 color has to be converted before its ratio means anything. Checking the sRGB fallback and shipping the P3 version as a visual upgrade is the safe pattern.
Frequently asked questions
Is Display P3 better than sRGB?
It is wider, which is not the same as better. P3 reaches roughly 25% more color area, almost all of it in reds, oranges and greens. If your palette does not live there, it buys you nothing — and it costs a fallback path on every value you use it for.
How much wider is P3 than sRGB?
About 25% more area in a chromaticity diagram, but the gain is very unevenly distributed. Reds and greens extend substantially; blues barely move.
How do I use Display P3 in CSS safely?
Declare the sRGB value first so every browser has something correct, then override it inside @supports (color: color(display-p3 0 0 0)). Browsers that do not understand the function keep the fallback, and sRGB displays are never handed an unconverted P3 value.
Does WCAG contrast work with P3 colors?
The formula is defined on sRGB relative luminance, so a P3 color must be converted to sRGB before the ratio means anything. In practice, check the sRGB fallback you are already shipping and treat the P3 version as a visual enhancement on top of a pair that already passes.
Try it yourself
Definitions
- sRGBsRGB is the default color space of the web: a specific set of red, green and blue primaries plus a transfer function that says how the stored numbers map to emitted light.
- Display P3Display P3 is a wide-gamut color space, standard on Apple hardware and increasingly elsewhere, covering about 25% more color area than sRGB.
- GamutA gamut is the set of colors a given device or color space can actually produce.
- ChromaChroma is how far a color sits from gray at its own lightness — an absolute measure of colorfulness, not a percentage of some maximum.
Other comparisons
- OKLCH vs HSLBoth are cylindrical: a hue angle, a colourfulness axis and a lightness axis. Only one of them measures lightness in a way your eye agrees with.
- WCAG contrast vs APCAOne is the standard you will be measured against. The other is the better model of what your eye is doing. You need both, for different reasons.
- Lab vs OKLabSame shape: a lightness axis and two opponent axes. Forty-four years apart, and fitted to different data.
- HEX vs RGBThis is not a question about color. Both are sRGB, both carry exactly the same information, and every hex code has an identical rgb() form.
- RGB vs CMYKOne model adds light, the other removes it. That is not a detail — it changes which colors are reachable and which conversions can be trusted.