# #81ecf3

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

## Values

- Hex: `#81ecf3`
- RGB: rgb(129, 236, 243)
- HSL: hsl(184, 83%, 73%)
- OKLCH: oklch(0.882 0.1 201.1)
- Relative luminance: 0.7113
- Nearest named color: Bath Water (#88eeee, Δ 1.168) — https://brandsweets.com/colors/bath-water
- Moods: cool, vivid, light, technical, modern, clean
- Page: https://brandsweets.com/colors/81ecf3

## Tints & shades

- Tints (toward white): #8feef5, #98eff5, #a6f1f7, #b0f3f8, #bef5f9, #c7f6fa, #d5f9fb, #defafc, #ecfcfd, #f6fefe
- Shades (toward black): #60e7f0, #40e2ed, #1fddea, #14c5d2, #11abb6, #0e8c95, #0b6e75, #084f54, #053033, #021213

## Harmonies

- Complementary: #f38981
- Analogous: #81f3c2, #81b3f3
- Triadic: #f381ec, #ecf381
- Split-complementary: #f381b3, #f3c281
- Tetradic: #c281f3, #f38981, #b3f381

## Colors that go with #81ecf3

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 #81ecf3: softer than #000 and cool enough to feel like part of the same palette. Seen in: Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Boeing (https://brandsweets.com/colors/brands/boeing-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #81ecf3's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Calendly (https://brandsweets.com/colors/brands/calendly-com). — https://brandsweets.com/colors/deepskyblue
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Blue Mono and First Snow put Midnight Blue beside #81ecf3, as the text colour against it. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), First Snow (https://brandsweets.com/palettes/cool#first-snow), Allbirds (https://brandsweets.com/colors/brands/allbirds-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/midnightblue
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #81ecf3: 4 real palettes, including Stone and Pine & Birch, as the supporting colour. Seen in: Stone (https://brandsweets.com/palettes/neutral#stone), Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal). — https://brandsweets.com/colors/sage-green
- **Slate Gray** #708090 [pool] — 4 real palettes, including Ink Wash and Dusty Blue put Slate Gray beside #81ecf3, as the supporting colour. Seen in: Ink Wash (https://brandsweets.com/palettes/dark#ink-wash), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Still Water (https://brandsweets.com/palettes/cool#still-water), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #81ecf3 in 17 real palettes, including Macaron and Nursery, as the text colour against it. Seen in: Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/taupe
- **Wheat** #f5deb3 [pool] — Designers have shipped Wheat with #81ecf3: 4 real palettes, including Mint Chip and Sorbet, as the accent. Seen in: Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Sorbet (https://brandsweets.com/palettes/light#sorbet), Oatly (https://brandsweets.com/colors/brands/oatly-com), Still Water (https://brandsweets.com/palettes/cool#still-water). — https://brandsweets.com/colors/wheat
- **Dark Salmon** #e9967a [harmony: complementary] — Dark Salmon sits directly opposite #81ecf3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/darksalmon

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

- On white (#ffffff): 1.38:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0d7f87 (4.77:1); AA: background → #5e5e5e (4.7:1); AAA: text → #0a6067 (7.29:1); AAA: background → #424242 (7.29:1)
- On black (#000000): 15.23:1 — AA pass, AA-large pass, AAA pass

## 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/81ecf3-a2b9be-df4e8a-1f262d-e9f1ee?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: "#81ecf3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.