# #5dd9ef

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

## Values

- Hex: `#5dd9ef`
- RGB: rgb(93, 217, 239)
- HSL: hsl(189, 82%, 65%)
- OKLCH: oklch(0.824 0.113 211.1)
- Relative luminance: 0.5818
- Nearest named color: Hammam Blue (#65dcd6, Δ 3.934) — https://brandsweets.com/colors/hammam-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/5dd9ef

## Tints & shades

- Tints (toward white): #6adcf0, #7de1f2, #8be4f4, #99e7f5, #abebf7, #b9eff8, #c7f2f9, #d5f5fb, #e8fafd, #f6fdfe
- Shades (toward black): #41d2ec, #25cce9, #16bdda, #13a5be, #108ca2, #0d7082, #0a5866, #07404a, #05282e, #021013

## Harmonies

- Complementary: #ef735d
- Analogous: #5defbc, #5d90ef
- Triadic: #ef5dd9, #d9ef5d
- Split-complementary: #ef5d90, #efbc5d
- Tetradic: #bc5def, #ef735d, #90ef5d

## Colors that go with #5dd9ef

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 #5dd9ef: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Boeing (https://brandsweets.com/colors/brands/boeing-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Dark Salmon** #e9967a [harmony, pool: complementary] — Dark Salmon sits directly opposite #5dd9ef 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). — https://brandsweets.com/colors/darksalmon
- **Crimson** #dc143c [pool] — Crimson is paired with #5dd9ef in 4 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
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #5dd9ef: 5 real palettes, including Patreon's brand system and Opensea's brand system, as the accent. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Opensea (https://brandsweets.com/colors/brands/opensea-io), Figma (https://brandsweets.com/colors/brands/figma), Bluesky Social (https://brandsweets.com/colors/brands/bsky-app). — https://brandsweets.com/colors/dodgerblue
- **Slate Gray** #708090 [pool] — 4 real palettes, including Still Water and Dusty Blue put Slate Gray beside #5dd9ef, 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
- **Taupe** #483c32 [pool] — Taupe is paired with #5dd9ef in 16 real palettes, including Boeing's brand system and Macaron, as the text colour against it. Seen in: Boeing (https://brandsweets.com/colors/brands/boeing-com), Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery), Mint Chip (https://brandsweets.com/palettes/light#mint-chip). — https://brandsweets.com/colors/taupe
- **Wheat** #f5deb3 [pool] — Designers have shipped Wheat with #5dd9ef: 4 real palettes, including Oatly's brand system and Mint Chip, as the supporting colour. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Still Water (https://brandsweets.com/palettes/cool#still-water), Sorbet (https://brandsweets.com/palettes/light#sorbet). — https://brandsweets.com/colors/wheat
- **Light Coral** #f08080 [harmony, pool: split] — Light Coral is a split-complement of #5dd9ef: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/lightcoral

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

- On white (#ffffff): 1.66:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0f8095 (4.62:1); AA: background → #545454 (4.56:1); AAA: text → #0b606f (7.2:1); AAA: background → #383838 (7.06:1)
- On black (#000000): 12.64:1 — 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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/5dd9ef-a2b7be-df4e7e-1f252d-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: "#5dd9ef" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.