# #89effb

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

## Values

- Hex: `#89effb`
- RGB: rgb(137, 239, 251)
- HSL: hsl(186, 93%, 76%)
- OKLCH: oklch(0.894 0.097 205.4)
- Relative luminance: 0.7402
- Nearest named color: Alpine Expedition (#99eeff, Δ 1.648) — https://brandsweets.com/colors/alpine-expedition
- Moods: cool, vivid, light, technical, modern, clean
- Page: https://brandsweets.com/colors/89effb

## Tints & shades

- Tints (toward white): #93f1fb, #9df2fb, #abf4fc, #b5f5fc, #bff7fd, #c9f8fd, #d3f9fd, #e1fbfe, #ebfcfe, #f5feff
- Shades (toward black): #66ebf9, #44e6f8, #1de1f7, #08d1e7, #07b2c5, #0693a2, #057480, #035059, #023136, #011214

## Harmonies

- Complementary: #fb9489
- Analogous: #89fbcd, #89b6fb
- Triadic: #fb89ef, #effb89
- Split-complementary: #fb89b6, #fbcd89
- Tetradic: #cd89fb, #fb9489, #b6fb89

## Colors that go with #89effb

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 #89effb: 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), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #89effb'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), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Calendly (https://brandsweets.com/colors/brands/calendly-com), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai). — https://brandsweets.com/colors/deepskyblue
- **Burlywood** #deb887 [pool] — Burlywood is paired with #89effb in 4 real palettes, including Coastal and Chalkboard, as the accent. Seen in: Coastal (https://brandsweets.com/palettes/cool#coastal), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Kiln (https://brandsweets.com/palettes/dark#kiln), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/burlywood
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #89effb in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/darkolivegreen
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Blue Mono and First Snow put Midnight Blue beside #89effb, 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
- **Peru** #cd853f [pool] — 4 real palettes, including Estate and Kiln put Peru beside #89effb, as the lead colour. Seen in: Estate (https://brandsweets.com/palettes/luxury#estate), Kiln (https://brandsweets.com/palettes/dark#kiln), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/peru
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #89effb: 5 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), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard). — https://brandsweets.com/colors/sage-green
- **Sienna** #a0522d [pool] — Sienna shows up next to #89effb in 4 real palettes, including Oatly's brand system and BrandSweets's brand system, as the lead colour. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/sienna

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

- On white (#ffffff): 1.33:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #05818f (4.62:1); AA: background → #636363 (4.52:1); AAA: text → #04626c (7.07:1); AAA: background → #454545 (7.22:1)
- On black (#000000): 15.8:1 — 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/89effb-a2b8be-df4e86-1f262d-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: "#89effb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.