Pairing 1 of 10
Blue Ocean, the complement
Koi + Blue Ocean
Blue Ocean is Koi's complement: the hue directly across the wheel. Each makes the other look more saturated than it is alone, so a little of either goes a long way. See Blue Ocean
- Walls & home
- Use one on the walls and the other only in objects you can move: pillows, a throw, one lamp.
- Web & brand
- One is your action color, the other is for rare emphasis. Never both on one button.
- Outfits
- One garment each, separated by a neutral layer, reads styled rather than loud.
Pairing 2 of 10
Berrylicious, a warm-side neighbor
Koi + Berrylicious
Koi and Berrylicious are wheel neighbors. Their shared undertone makes the combination feel like one idea in two weights rather than two competing colors. See Berrylicious
- Walls & home
- Safe across large surfaces: walls in one, curtains or a rug in the other.
- Web & brand
- Ideal for gradient fills and chart series that must feel related.
- Outfits
- Head-to-toe works: the two shades read as an intentional tonal outfit.
Pairing 3 of 10
Caramel, a cool-side neighbor
Koi + Caramel
Koi and Caramel are wheel neighbors. Their shared undertone makes the combination feel like one idea in two weights rather than two competing colors. See Caramel
- Walls & home
- Safe across large surfaces: walls in one, curtains or a rug in the other.
- Web & brand
- Ideal for gradient fills and chart series that must feel related.
- Outfits
- Head-to-toe works: the two shades read as an intentional tonal outfit.
Pairing 4 of 10
Baltic, split-complement one
Koi + Baltic
This is the diplomatic version of a complement. Baltic contrasts strongly with Koi without the vibration a true opposite can produce at high saturation. See Baltic
- Walls & home
- Cabinetry or a feature wall in one, ceramics and textiles in the other.
- Web & brand
- Primary/secondary button pair, if both pass contrast on your background.
- Outfits
- A main piece in one and accessories in the other.
Pairing 5 of 10
Pool Water, split-complement two
Koi + Pool Water
This is the diplomatic version of a complement. Pool Water contrasts strongly with Koi without the vibration a true opposite can produce at high saturation. See Pool Water
- Walls & home
- Cabinetry or a feature wall in one, ceramics and textiles in the other.
- Web & brand
- Primary/secondary button pair, if both pass contrast on your background.
- Outfits
- A main piece in one and accessories in the other.
Pairing 6 of 10
Bejewelled, from the triad
Koi + Bejewelled
Koi and Bejewelled form two-thirds of an equilateral triangle on the wheel. The spacing guarantees contrast while keeping the pair from reading as rivals. See Bejewelled
- Walls & home
- Keep two of the three at low saturation in a room; let one carry the chroma.
- Web & brand
- Three chart series that stay distinguishable without shouting.
- Outfits
- Two in clothing, the third only in small accents: bag, socks, scarf.
Pairing 7 of 10
Wax Flower, the tonal pale
Koi + Wax Flower
Same hue, more light. Wax Flower behaves like Koi's own highlight, which is why tonal schemes feel so composed. See Wax Flower
- Walls & home
- Walls in the pale one, trim and millwork in the deeper one reads custom, not matchy.
- Web & brand
- Surface and hover states of the same component family.
- Outfits
- Layer them: the lighter piece inside, the deeper piece outside.
Pairing 8 of 10
Chestnut, the anchor shade
Koi + Chestnut
A darker cut of the same hue family. Deep-plus-mid pairings give a scheme structure the way a baseline gives type structure. See Chestnut
- Walls & home
- The dark one grounds floors, doors, or an accent wall; the mid one lives at eye level.
- Web & brand
- The dark one is your text-safe tone; the mid one handles fills and accents.
- Outfits
- The deep one for trousers or outerwear, the mid one up top near the face.
Pairing 9 of 10
Hemp, the working neutral
Koi + Hemp
Every strong color needs a quiet counterpart. Hemp has just enough of an undertone to relate to Koi without competing for attention. See Hemp
- Walls & home
- The neutral takes the biggest surfaces; the color earns the details.
- Web & brand
- The neutral is your surface system; the color marks interactive elements.
- Outfits
- Build the outfit in the neutral and let the color be the one piece people remember.
Pairing 10 of 10
Ink and paper
Koi + King Kong
The classic frame. With ink and paper around it, Koi becomes the single point of color, which is the strongest way to feature any hue. See King Kong
- Walls & home
- White walls, near-black frames and hardware, and the color in art and textiles.
- Web & brand
- A near-monochrome UI with one accent tests well and ships timeless.
- Outfits
- Black and white basics with the color as the single statement piece.
The map
Every pairing on the wheel
Hue is the angle, chroma is the distance from center, both measured in OKLCH from each color's actual value. Complements land across the disc; neighbors cluster; neutrals sink toward the middle.
- Koi 41°
- Blue Ocean 224°
- Berrylicious 15°
- Caramel 69°
- Baltic 197°
- Pool Water 256°
- Bejewelled 161°
- Wax Flower 40°
- Chestnut 42°
- Hemp 41°
- King Kong 85°
Pitfalls
Common mistakes with Koi
- Mistake 1 Pairing Koi with a second color of identical lightness. Nothing anchors, and the scheme floats. Bring one partner up or down in value.
- Mistake 2 Using the complement at full strength across a large area. It is an accent relationship, not a 50/50 split.
- Mistake 3 Cooling it accidentally: many grays lean blue, and next to a warm color like Koi they read dingy. Choose a warm-leaning neutral.
FAQ
Koi pairing FAQs
What is the complementary color of Koi?
Koi's complement lands closest to Blue Ocean (#009DC4), computed by rotating its OKLCH hue 180 degrees. The measured difference between them is ΔE 53.1.
Is Koi warm or cool?
Koi reads warm. That matters for pairing: partners with the opposite temperature add contrast, same-temperature partners add calm.
What neutrals go with Koi?
Hemp is the computed pick: it keeps a trace of Koi's own hue, so the pair can't clash. Pure white and near-black always work as the frame.