Individual Colors Printer Test Page

When a color print looks wrong, it’s tempting to describe the problem in terms of the output — “my photos look too warm” or “my blues are off.” But mixed-color problems are almost always caused by a single-channel issue. Isolating each channel on this test page lets you identify the root cause directly rather than guessing.

Each of the four channels (Cyan, Magenta, Yellow, Black) is printed as a solid block and a gradient strip. The solid block tests whether the channel can deliver full-density ink uniformly. The gradient tests whether the channel can modulate its output smoothly from zero to full strength. A channel might pass the solid block test (enough ink for full coverage) but fail the gradient test (can’t deliver precise intermediate amounts), which would show up in real prints as posterization or banding in that color range. To see how your screen colors map to specific CMYK channel percentages, use the RGB to CMYK converter.

Color perception makes channel diagnosis counterintuitive. When one channel weakens, the remaining channels become proportionally stronger, shifting the output in unexpected directions:

Weak cyan → reds and warm tones become too strong. Skin tones appear too pink or ruddy. Blue skies shift toward purple. Green foliage turns yellowish. This is the most common single-channel problem and the one most often misdiagnosed because people don’t associate “too much red” with “not enough cyan.”

Weak magenta → greens become too dominant. Skin tones look sallow or greenish. Red objects appear dull orange. Purple tones lose their warmth.

Weak yellow → blues and cool tones overpower the image. Skin tones develop a bluish cast. Greens shift toward teal. Sunset photos look cold.

Weak black → text appears grey rather than solid black. Dark areas in photos look washed out. Fine detail loses definition because the black channel provides the contrast backbone of most prints.

If a nozzle check looks clean but your output still has a color cast, look at this page’s gradients carefully — a partial nozzle weakness that delivers 85% ink instead of 100% won’t always show visible gaps on a nozzle check, but the gradient on this page will reveal the density shortfall. For detailed guidance on calibrating your printer’s color output, see our calibration guide.