Short answer
A screen makes colour by emitting light; a print makes it by subtracting light from paper, so the two have different gamuts, a different white and a different black. A print matches a screen only as closely as colour management, the chosen press condition, the paper, the viewing light and the screen's own calibration allow — and some screen colours simply cannot be printed with four inks.
A monitor adds red, green and blue light on a black panel. Its white is the brightest thing it can emit — often several times brighter than a sheet of paper under room light — and its black is whatever the panel leaks. A print starts from paper white and removes light: cyan ink absorbs red, magenta absorbs green, yellow absorbs blue, and black darkens everything. The brightest white on a print is the paper itself, and the darkest black is limited by how much ink the paper will hold. So the screen and the print are not two renderings of one colour space; they are two physical systems with different shapes of gamut, and colour management has to map one onto the other.
The colours most often lost are the saturated ones a monitor does best: pure RGB blues and violets, electric greens and bright oranges. On coated offset paper the blue overprint of cyan and magenta reaches a CIELAB chroma of about 52, while sRGB blue sits near 134. In the other direction, press cyan (chroma about 63 on FOGRA51) is more saturated than anything an sRGB screen can show, so a strong print cyan looks dull in an sRGB preview. Dark shadows also compress: coated offset black reaches L* 16, uncoated about 33 and newsprint about 37, all far lighter than an OLED panel's black.
The chroma figures are Colourwise calculations from the published FOGRA51 characterisation data and the sRGB definition; see 'Why blues go dull in CMYK'.
Print standards assume prints are judged under D50 light at a defined level (ISO 3664 viewing conditions), while monitors are usually set to D65 and a brightness chosen for comfort. Put a print under a warm desk lamp next to a bright, blue-white screen and the eye adapts to neither: the print looks yellow and dim, the screen looks cold. Many 'the print is too dark' complaints are a monitor turned up well beyond the brightness of paper in that room, so every image was edited to look right on a light source the print can never match.
Somewhere between the design file and the plate, RGB values become CMYK. If that happens in a design application with the correct output profile, the designer sees an approximation of the loss on screen and can adjust. If a print shop's RIP converts an RGB PDF with a generic default profile, the result depends on choices nobody on the design side saw: the rendering intent, the ink limit, the black generation and the paper assumed. Two printers can therefore print one RGB file differently and both be working correctly. Supplying print-ready files converted to the printer's stated condition — or asking which condition they print to — removes most of that uncertainty.
Even in a fully managed workflow the goal is not identity but a controlled, predictable difference. Contract proofs are allowed a few CIEDE2000 units from the press aims; press sheets have their own tolerances on top. A realistic target is that in-gamut colours look the same when the print is viewed under D50 beside a calibrated screen set to a paper-like brightness and white, and that out-of-gamut colours are mapped in a way the designer previewed and accepted. Anything tighter needs a physical proof, not a screen.
| Printing condition | Paper white L* / a* / b* | Black solid L* | CMY overprint L* | Lightness range (paper − darkest) |
|---|---|---|---|---|
| FOGRA51 — Offset, premium coated paper (PSO Coated v3) | 95 / 1.5 / -6 | 16 | 23.26 | 79 |
| FOGRA52 — Offset, wood-free uncoated paper (PSO Uncoated v3) | 93.5 / 2.5 / -10 | 32.69 | 34.61 | 60.8 |
| FOGRA39 — Offset, gloss or matt coated paper (ISO Coated v2) | 95 / 0 / -2 | 16 | 23 | 79 |
| IFRA26 — Coldset offset on standard newsprint | 85.2 / 0.9 / 5.18 | 36.76 | 40.39 | 48.4 |
Why: The monitor is set far brighter than paper under the viewing light, so images were edited too dark.
Fix: Calibrate the display to a paper-like luminance and white point, and judge prints under D50-type light at a stated level.
Why: The colour is well outside the press gamut and the conversion mapped it towards the nearest printable colour.
Fix: Soft-proof against the printer's profile and choose a printable CMYK build, or specify a spot ink.
Why: An RGB file was converted by each printer's RIP with different profiles, intents and ink limits.
Fix: Supply a PDF/X file already converted to, or tagged for, the stated printing condition.
Each statement is labelled by kind — established fact, a standard’s requirement, observed market data, a convention, or Colourwise’s own interpretation or analysis — with the strength of the evidence behind it.
FactStrong evidence
The FOGRA51 characterisation data for premium coated offset gives a black solid of L* 16.0 and a paper white of L* 95.0, measured under D50 with the M1 condition.
Source: FOGRA51 characterization data (premium coated offset, ISO 12647-2:2013)
Colourwise analysisStrong evidence
Computed from published data, the sRGB blue primary has a CIELAB chroma of about 134, while the coated-offset (FOGRA51) blue overprint of cyan and magenta has a chroma of about 52.
Based on: sRGB blue converted to CIELAB (D65 reference white) with Colourwise's colour library; FOGRA51 C+M solid overprint taken from the data file (D50). Each is relative to its own white.
Caveat: The two are relative to different reference whites and no chromatic adaptation is applied; the comparison shows the scale of the gap, not an exact ΔE.
Source: FOGRA51 characterization data (premium coated offset, ISO 12647-2:2013); International Electrotechnical Commission (IEC) webstore and catalogue
FactStrong evidence
ICC colour management converts colour between devices through a device-independent connection space using a profile for each device, and offers several rendering intents for colours the destination cannot reproduce.
Source: International Color Consortium: specifications and information; White Paper 40: Black-point compensation — theory and application
Colourwise interpretationLimited evidence
Most everyday print-versus-screen disappointment comes from an over-bright, unprofiled monitor and from RGB files converted by the printer with settings the designer never saw, rather than from press faults.
Based on: Follows from the size of the brightness difference between typical monitor settings and paper under room light, and from how RIP-side conversion works; not a survey of print complaints.
Caveat: Press variation and wrong paper are also real causes; this is a generalisation.
Reviewed 29 September 2026. Colourwise summarises its sources in its own words and does not reproduce standards text or proprietary colour data. Spotted an error? Tell us.