Color is one of the most powerful tools in dressing well, and one of the least taught. Most style advice skips over it entirely or reduces it to vague rules about what colours match. Here is what you actually need to know to use colour intentionally in the way you dress.
Warm vs cool undertones
Every colour has an undertone: warm (yellows, oranges, reds) or cool (blues, greens, purples). The same applies to your skin. Warm-undertone skin tends to be golden, peachy, or olive. Cool-undertone skin tends to be pink, rosy, or bluish. Neutral undertones fall somewhere in between.
Colours that share your undertone tend to look harmonious next to your skin. Colours that contrast with it create more visual tension. Neither is wrong. Knowing your undertone means you are choosing that contrast intentionally rather than accidentally.
A quick test: look at the inside of your wrist. If your veins appear green, you likely have warm undertones. If they appear blue or purple, you likely have cool undertones. If it is hard to tell, you are probably neutral.
Contrast ratio
High contrast styling means pairing colours that are very different in lightness or depth: black with white, navy with cream, burgundy with pale pink. It is striking, graphic, and tends to read as polished and intentional. Low contrast styling means keeping your tones close together: camel with beige, ivory with blush, dark grey with charcoal. It is softer, more tonal, and often looks very expensive.
Your natural colouring (hair, skin, and eye contrast) influences which approach tends to work best for you. High-contrast features often suit high-contrast dressing. More subtle features can be overwhelmed by very stark colour combinations and tend to look beautiful in tonal dressing.
Three rules that work
The 60-30-10 rule: When combining colours in an outfit, use one colour for roughly 60% of the look (usually your bottom half or a coat), one for 30% (your top or main layer), and one for 10% (accessories, shoes, jewellery). This gives colour without visual noise.
Choose a point of colour: If you wear a lot of neutrals, let one piece carry the colour. A rich-toned bag, a coloured shoe, or a single bold earring is often enough to lift an entire outfit from safe to considered.
Repeat a colour: Wearing the same colour in two places in an outfit (earrings that pick up your bag, a belt that matches a shoe) creates visual coherence and makes an outfit look much more intentional than it might actually be.