Printing a birthday color chart

A screen color is light; a print color is ink

Every hex value on this site describes an sRGB color: red, green and blue light added together on a display. A printer lays down cyan, magenta, yellow and black ink on paper, and the paper reflects light back. The two gamuts overlap but are not the same shape, and some saturated screen colors - especially bright greens and violets - have no close ink equivalent.

That is why a printed swatch can look duller than the phone it was matched from, and why the same hex can print differently on coated and uncoated stock. There is no universal hex-to-CMYK formula that fixes this. A print shop converts through an ICC profile for its press, its ink set and its paper; the hex is the reference, the proof is the truth.

What the print tool gives you

Choose a month and the tool renders that month's days in order: date, color name, hex value and RGB values, with a printed swatch beside each. The table is real markup, so it prints with the browser's own print command and needs no download. The print stylesheet drops the site header, the footer, the forms and the buttons, leaving the chart and its heading.

The RGB values are there for the person doing the conversion. A print shop that asks for CMYK can convert from sRGB, but it needs to know which RGB space you meant; saying sRGB removes the ambiguity. Do not convert to CMYK at home with a free converter and send that - the shop will convert again, and the two conversions compound.

Choosing what to print

A single month is the useful unit for a party, a classroom or a birth-month display: 28 to 31 rows fit one or two pages at a readable size. The full year is a different object - 366 rows - and belongs in a bound swatch book or a wall poster, not in a home printer's tray. If you want the whole year, print twelve month sheets and bind them; the tool gives you the same layout for each.

Paper choice matters more than most people expect. Coated paper holds ink on the surface and gives the most saturated result; uncoated paper absorbs it and reads softer and more textured. For a chart you will handle, uncoated 100-120 gsm is pleasant and durable. For a color reference you will compare against a screen, coated is closer to the screen's punch but still not equal to it.

Test before you print a run

Print one page on the actual paper before ordering fifty. Compare it with the screen in daylight, not under a desk lamp, and look at one saturated color and one pale color. If the pale colors disappear into the paper, the chart needs a slightly heavier paper or a thin outline around each swatch - the site's own swatches carry a hairline border for exactly that reason.

For a professional run, ask for a proof and check the darkest and lightest entries, not the middle. A mid-tone usually survives conversion; the extremes are where the gamut clips. If a proof shows a color clipping, the honest fix is to accept the shift and note it, not to keep converting until the number matches and the print does not.

Text and contrast on paper

The contrast rules do not stop applying because the output is paper. A pale swatch with white text fails in print exactly as it fails on a screen, and it fails worse under a warm lamp. Use dark text on light swatches and light text on dark ones, or place the label outside the swatch on a paper-colored strip.

The tool labels each row on the page surface rather than inside the color block, which keeps every value readable regardless of the swatch. If you redesign the sheet, keep that property: the label should not depend on the color it describes.

What printing cannot do

It cannot make the colors authoritative. A printed hex value is a reference to a screen color, and the screen color is the one this site publishes. If you need a physical color standard for a commercial product, that is a different problem: you need a physical swatch book from a color standards company and a press profile, not a printout from a website.

It also cannot carry the readings well. They are paragraphs, and a chart with 30 paragraphs is a booklet. Print the names and values, keep the readings on the day pages, and the chart stays a chart.

A proof, a profile, and what to tell the printer

A simple proof has four steps. Look at the screen in daylight with the display at a normal brightness. Print one page on the paper you intend to use. Compare the darkest swatch, the lightest swatch and one mid-tone. If the pale swatches disappear, add a hairline border or change paper; if a saturated swatch shifts hue, note the shift and decide whether it matters for the job. Do not compare under a desk lamp and do not judge a print from a phone photo.

A print shop converts sRGB to its press through an ICC profile. The profile describes how that press, ink set and paper reproduce color, and the rendering intent decides what happens to colors outside the gamut: relative colorimetric keeps in-gamut colors close and clips out-of-gamut ones, while perceptual compresses the whole range to preserve relationships. The shop chooses; your job is to say that the values are sRGB and to ask which profile and intent it will use.

Tell the printer four things: the file is sRGB, the values are references rather than a physical standard, you want a proof on the final stock, and you will accept a visible shift in the most saturated colors. That last sentence is not defeat. It is the difference between a job that gets reprinted and a job whose limits were agreed before it started.

Where to go next

• Birthday color chart
• March birthday colors
• Birth month colors

More guides

• Birthday colour or birthday color?
• What goes with my birthday color?
• A birthday party theme from one color
• Birthday colors by season