Interaction of Color: What Josef Albers Teaches Event Lighting
Albers showed that a color changes with what surrounds it. Under event lighting, that changes everything.
A brand color that looks right on screen can look wrong under show lights. This essay uses Josef Albers's Interaction of Color to explain why, and what changes a color at an event. It ends with a seven-step color sign-off you can run before anything is printed.
A brand color can look right on screen and on a printed swatch, then wrong on the night. The cause is usually the light and the colors around it, not the print.
Josef Albers explained why in Interaction of Color. A color is almost never seen as it is. So under event lighting, a color has to be approved in its setting, never alone.
The color that changed overnight
The story is common. A navy fascia reads purple under a magenta wash. A corporate red looks dull beside the brighter red of the next stand. The printer matched the swatch, and the swatch looked right in the office.
Nothing went wrong in production. The color was judged in one setting and seen in another. It was approved at a desk, built under work lights and then shown under stage lighting. Albers spent his teaching life showing why that matters.
Josef Albers and Interaction of Color
Albers taught at the Bauhaus, then at Black Mountain College from 1933 and at Yale from 1950. Herbert Bayer, his Bauhaus colleague, brought the same care for how people see to his own shows. He designed exhibitions around the visitor's field of vision.
Interaction of Color came out from Yale University Press in 1963 as a limited silkscreen edition. It teaches through exercises, not theory. Students move colored papers until they see what changes. In 2013, Yale and the Josef and Anni Albers Foundation released an iPad edition.
The book opens with the claim event designers most need. "In visual perception a color is almost never seen as it really is," Albers wrote.
One color as two
Three of Albers's exercises explain most surprises on site. In the first, one color sits on a light ground and on a dark ground. It reads as two different colors. In the second, two different colors are made to look alike by the grounds chosen for them.
The third is about the edge. Where two colors meet, each one pushes the other. A dark neighbor makes a color look lighter, and a warm neighbor makes it look cooler.
A brand color on a white wall, on black drape and beside a neighbor's stand is three colors to the eye. Which one the client approved depends on the ground the swatch sat on.
The book also shows what happens when two colors share the same lightness. Their border grows weak.
Strong, clashing hues of equal lightness seem to vibrate where they meet. On a sign, that means text that is hard to read in dim light, even when the colors look bold on screen. Check the contrast in lightness, not only in hue, for every line of text on a stand or a stage.
Light changes the ground
Event lighting changes both the light that falls on a color and what surrounds it. Warm white can dull blues, and cool white can dull reds. A strong colored wash repaints the background, and with it every color judged against it. A light source with poor color rendering makes different colors look the same.
Black drape and LED screens add two more grounds. Drape swallows light, so a color beside it reads lighter and stronger than it did on a white desk.
A screen gives off its own light. So a printed panel in the brand color can look dull next to the same color on an LED wall. Judge print and screen side by side, at show brightness.
Ask lighting suppliers for color rendering measured with the IES TM-30 method. It scores fidelity (Rf) and gamut (Rg) across 99 color samples, where the older CRI used 8, as XAL explains. Rf says how true the colors look. Rg says whether they look more or less saturated.
The public demonstration was Olafur Eliasson's The Weather Project at Tate Modern. It ran from 16 October 2003 to 21 March 2004. Lamps of a single frequency lit the Turbine Hall so that only yellow and black remained. It was the extreme case of light deciding color.
A color sign-off for event lighting
A render cannot replace this test. A screen shows the color the file holds, not the color the room makes.
- Real fixtures, real levels. Approve samples on site or in a mock-up, under the show's own fixtures and dimmer levels.
- Real neighbors. View each sample beside the drape, carpet, nearby stands and stage screens it will sit against.
- On camera. Check samples through a broadcast camera and a phone. Both read light differently from the eye.
- Reference white. Set one reference white for the event and judge every sample beside it.
- TM-30 values. Ask the lighting supplier for Rf and Rg for each fixture type, and record them.
- Signed record. Log the sample, fixture, level, neighbors, camera result, approver and date.
- Recheck after changes. A new fixture, gel, drape or neighbor reopens the sign-off, because each one changes the ground.
Build the test into the schedule of any exhibition design project at the mock-up stage, before print is ordered.
Designing with the interaction
Use Albers on purpose, not only in defense. Choose grounds that make the brand color stronger, and use light to separate zones. Let color carry meaning too, as Otl Aicher's color code for Munich 1972 did. Approve every color under the show's own light and beside its real neighbors.
Albers shows that a color is judged by its setting, and so is a whole design. Monet renders a layout in 3D inside the real room, with walkthrough videos, so a team can see a stand or a stage in its setting before the build. Final colors still need a sign-off under the show's own lights.