# #81d3ea

A color — cool, vivid, light, technical, modern, clean. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#81d3ea`
- RGB: rgb(129, 211, 234)
- HSL: hsl(193, 71%, 71%)
- OKLCH: oklch(0.823 0.086 217.7)
- Relative luminance: 0.572
- Nearest named color: Sky Blue (#87ceeb, Δ 1.473) — https://brandsweets.com/colors/skyblue
- Moods: cool, vivid, light, technical, modern, clean
- Page: https://brandsweets.com/colors/81d3ea

## Tints & shades

- Tints (toward white): #8ed7ec, #96daed, #a3dfef, #b1e4f2, #bee8f4, #c6ebf5, #d3f0f8, #e0f4fa, #e9f7fb, #f6fcfe
- Shades (toward black): #62c8e4, #48bfe0, #29b4db, #219dc0, #1c88a6, #176f87, #125669, #0d3d4a, #082730, #030e11

## Harmonies

- Complementary: #ea9781
- Analogous: #81eacc, #819eea
- Triadic: #ea81d3, #d3ea81
- Split-complementary: #ea819e, #eacc81
- Tetradic: #cc81ea, #ea9781, #9eea81

## Colors that go with #81d3ea

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #81d3ea: softer than #000 and cool enough to feel like part of the same palette. Seen in: Boeing (https://brandsweets.com/colors/brands/boeing-com), Coastal (https://brandsweets.com/palettes/cool#coastal), Harbour (https://brandsweets.com/palettes/cool#harbour), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/charcoal
- **Dark Salmon** #e9967a [harmony, pool: complementary] — Dark Salmon sits directly opposite #81d3ea on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Polaroid (https://brandsweets.com/palettes/light#polaroid), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard). — https://brandsweets.com/colors/darksalmon
- **Crimson** #dc143c [pool] — Crimson is paired with #81d3ea in 6 real palettes, including Tiffany & Co.'s brand system and Frost & Ember, as the supporting colour. Seen in: Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Formula 1 (https://brandsweets.com/colors/brands/formula1-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #81d3ea: 4 real palettes, including UEFA's brand system and Nikon's brand system, as the accent. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Nikon (https://brandsweets.com/colors/brands/nikon-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #81d3ea: 5 real palettes, including Opensea's brand system and Patreon's brand system, as the lead colour. Seen in: Opensea (https://brandsweets.com/colors/brands/opensea-io), Patreon (https://brandsweets.com/colors/brands/patreon-com), Figma (https://brandsweets.com/colors/brands/figma), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 6 real palettes, including Telehealth and Blue Mono put Midnight Blue beside #81d3ea, as the text colour against it. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), First Snow (https://brandsweets.com/palettes/cool#first-snow), Lavender Milk (https://brandsweets.com/palettes/light#lavender-milk). — https://brandsweets.com/colors/midnightblue
- **Plum** #dda0dd [harmony, pool: triadic] — Plum completes a triad with #81d3ea — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Netlify (https://brandsweets.com/colors/brands/netlify-com), Mercury (https://brandsweets.com/colors/brands/mercury-com), Blossom (https://brandsweets.com/palettes/light#blossom). — https://brandsweets.com/colors/plum
- **Slate Gray** #708090 [pool] — 7 real palettes, including Still Water and Dusty Blue put Slate Gray beside #81d3ea, as the lead colour. Seen in: Still Water (https://brandsweets.com/palettes/cool#still-water), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono). — https://brandsweets.com/colors/slategray

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 1.69:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1a7d99 (4.73:1); AA: background → #525252 (4.63:1); AAA: text → #135d71 (7.42:1); AAA: background → #363636 (7.16:1)
- On black (#000000): 12.44:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Boeing** — secondary #82d4f6 (Δ 1.699) — https://brandsweets.com/colors/brands/boeing-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- clean: https://brandsweets.com/fonts/mood/clean

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/81d3ea-a2b5be-df4e75-1f242d-e9f1ef?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#81d3ea" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.