A swatch lets a colour be considered with texture, light and neighbouring materials. That is a different conversation from choosing a small rectangle on a screen.
A precise-looking machine is not the whole story of precision. The drawing, the reference, the measurement method and the handover of information need to agree.
A garment is the result of many linked decisions. Looking at fabric, construction, fit and care offers a more useful perspective than judging an item only by its first appearance.