カラースキームプラン：色見本、比率、空間配分

Create a colour scheme diagram for an interior, drawn as a flat graphic layout. Show a horizontal proportion bar across the top divided into segments sized by how much each colour occupies in the scheme — a long segment for the dominant wall tone, a medium one for the secondary, and small slivers for accents — each labelled with its name and code beneath. Below it, show the same palette applied: a simplified flat elevation of one wall with the colours in place, and a small flat plan with each room filled in its assigned tone. Detail a column of round colour chips at the side, each with its name, code and a one-word role such as dominant, secondary or accent. Keep every colour flat with no gradient or texture so the hues can be judged accurately. Add a fine hairline grid structuring the layout and clean sans-serif labelling throughout. Flat graphic design layout, white background, no shadows, no photorealism.