# #5bd1dc

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

## Values

- Hex: `#5bd1dc`
- RGB: rgb(91, 209, 220)
- HSL: hsl(185, 65%, 61%)
- OKLCH: oklch(0.798 0.106 203.7)
- Relative luminance: 0.5299
- Nearest named color: mediumturquoise (#48d1cc, Δ 2.776) — https://brandsweets.com/colors/mediumturquoise
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/5bd1dc

## Tints & shades

- Tints (toward white): #6cd6e0, #78dae2, #89dee6, #9ae3ea, #abe8ed, #b7ebf0, #c8f0f3, #d9f4f7, #e6f8fa, #f7fdfd
- Shades (toward black): #42cad7, #2dc5d2, #27adb9, #2295a0, #1d828b, #186a72, #135358, #0d3b3f, #09272a, #041011

## Harmonies

- Complementary: #dc665b
- Analogous: #5bdca6, #5b91dc
- Triadic: #dc5bd1, #d1dc5b
- Split-complementary: #dc5b91, #dca65b
- Tetradic: #a65bdc, #dc665b, #91dc5b

## Colors that go with #5bd1dc

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 #5bd1dc: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Coastal (https://brandsweets.com/palettes/cool#coastal), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/charcoal
- **Light Coral** #f08080 [harmony, pool: complementary] — Light Coral sits directly opposite #5bd1dc on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/lightcoral
- **Crimson** #dc143c [pool] — Crimson is paired with #5bd1dc in 4 real palettes, including Tiffany & Co.'s brand system and Riot Games's brand system, as the supporting colour. Seen in: Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Formula 1 (https://brandsweets.com/colors/brands/formula1-com). — https://brandsweets.com/colors/crimson
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #5bd1dc: 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), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Telehealth and First Snow put Midnight Blue beside #5bd1dc, as the text colour against it. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), First Snow (https://brandsweets.com/palettes/cool#first-snow), Confluent (https://brandsweets.com/colors/brands/confluent-io), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #5bd1dc in 6 real palettes, including Telehealth and 1password's brand system, as the lead colour. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), 1password (https://brandsweets.com/colors/brands/1password-com), Docker (https://brandsweets.com/colors/brands/docker-com), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Slate Gray** #708090 [pool] — 5 real palettes, including Still Water and Dusty Blue put Slate Gray beside #5bd1dc, as the lead colour. Seen in: Still Water (https://brandsweets.com/palettes/cool#still-water), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #5bd1dc in 16 real palettes, including Crayon Box and Boeing's brand system, as the text colour against it. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Boeing (https://brandsweets.com/colors/brands/boeing-com), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Raycast (https://brandsweets.com/colors/brands/raycast). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 1.81:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1d828b (4.55:1); AA: background → #4f4f4f (4.52:1); AAA: text → #166269 (7.03:1); AAA: background → #303030 (7.29:1)
- On black (#000000): 11.6:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Mattel** — accent #6ad1e2 (Δ 1.507) — https://brandsweets.com/colors/brands/mattel-com

## 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/5bd1dc-a2b8be-df4e88-1f262d-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: "#5bd1dc" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.