Imprimatura
A thin transparent wash of colour laid over the ground before any real painting begins. It costs an hour and it decides the temperature of everything that follows.
Where the word comes from
From Italian imprimere, to press or print into — the same root as the ecclesiastical imprimatur, permission to print. In the workshop it named the stage between preparing a surface and painting on it: the moment the white glare of the ground is knocked down to something a painter can judge colour against.
In the studio
A white ground is a liar. Every colour laid on it looks darker and duller than it will look once it is surrounded by other colours, so painters killed the white first. Titian used a warm golden-brown wash that pulls all the later layers into one key. Rubens brushed a streaky grey over white panel and deliberately let it show through in the half-tones of skin, which is why his flesh appears lit from within rather than painted on. Velázquez worked so thinly in places that the imprimatura is doing the work of a colour, not of a preparation.
Why it matters
It is the earliest visible decision about mood, and the hardest to undo — everything above it is glazed or scumbled over a tone that shifts each one. It is also the layer that unfinished paintings expose. Where a picture was abandoned, what you see is not bare canvas but the imprimatura with the drawing on it and a few blocked forms, and that stage is often more legible about the painter's method than the finished works next to it.
Today
Every image made on a base tone repeats it: film graded over a base density rather than pure black, a photograph printed on warm rather than bright white paper, a page whose background is a warm off-white so that no element on it ever reads as clinical. The mechanism is identical — one transparent decision underneath, changing everything above it without appearing to be a colour at all.
Pigments used: Umber · Sienna · Lead white
See also: Titian · Peter Paul Rubens · Diego Velázquez