Start With the View Across the Floor
Walk through the proposed seating area and note where chair bases will be visible. Red may appear beneath desk openings, beside meeting tables or in the gaps between furniture. Consider these views together before deciding how the colour should relate to floor patterns, desk legs and other nearby coloured surfaces.
Red base office chairs with unspecified standards allow colour to be part of that spatial assessment, but do not establish an exact shade or finish. Use a sample to judge the intended relationship. Check the room under its usual lighting rather than relying solely on a screen image for comparison.
Make Practical Requirements Independent of Red
Define what people need from their office chairs before assessing visual preferences. Identify the work surface, typical activities and expected users. Then check dimensions, adjustment options and access around the workstation. None of these characteristics follows from the base colour, so each needs its own confirmation during the seating review.
If the seating includes arms or a moving base, examine how those elements interact with the desk and surrounding space. If it does not, assess the implications for the intended activity. Keep observations specific to the configuration being considered, rather than extending assumptions from another chair that happens to resemble it.

