Apparently the thing to look for is the CRI, or "Color Rendering Index":
Color-rendering Index (CRI): Refers to how well the light from the bulb reflects true colors.I presume this number is on the bulbs' packaging.
The CRI scale tops out at 100, the equivalent to natural sunlight or soft white incandescent bulbs. The CRI for fluorescent bulbs typically ranges from 50 for a basic bulb to 90 for a plant and aquarium bulb.
Time to go shopping.
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