# #21dced

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

## Values

- Hex: `#21dced`
- RGB: rgb(33, 220, 237)
- HSL: hsl(185, 85%, 53%)
- OKLCH: oklch(0.818 0.136 205.1)
- Relative luminance: 0.5762
- Nearest named color: Hammam Blue (#65dcd6, Δ 4.158) — https://brandsweets.com/colors/hammam-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/21dced

## Tints & shades

- Tints (toward white): #39e0ef, #4ce3f0, #63e6f2, #76e9f4, #8eedf6, #a1f0f7, #b8f4f9, #cbf7fb, #e3fbfd, #f6fefe
- Shades (toward black): #12d1e2, #10bbcb, #0fa6b3, #0d909c, #0b7e89, #096971, #07535a, #053d42, #03272a, #021113

## Harmonies

- Complementary: #ed3221
- Analogous: #21ed98, #2176ed
- Triadic: #ed21dc, #dced21
- Split-complementary: #ed2176, #ed9821
- Tetradic: #9821ed, #ed3221, #76ed21

## Colors that go with #21dced

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 #21dced: 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), Boeing (https://brandsweets.com/colors/brands/boeing-com), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #21dced 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), Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #21dced: 4 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), Bluesky Social (https://brandsweets.com/colors/brands/bsky-app), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/dodgerblue
- **Taupe** #483c32 [pool] — Taupe is paired with #21dced in 8 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), Macaron (https://brandsweets.com/palettes/light#macaron). — https://brandsweets.com/colors/taupe
- **Salmon** #fa8072 [harmony: complementary] — Salmon sits directly opposite #21dced 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/salmon
- **Dark Orange** #ff8c00 [harmony, pool: split] — Dark Orange is a split-complement of #21dced: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: PayPal (https://brandsweets.com/colors/brands/paypal-com). — https://brandsweets.com/colors/darkorange
- **Blue** #0000ff [pool] — 3 real palettes, including Canva's brand system and Uber's brand system put Blue beside #21dced, as the accent. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Uber (https://brandsweets.com/colors/brands/uber-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Khaki** #f0e68c [pool] — 3 real palettes, including Pastel Pop and Nursery put Khaki beside #21dced, as the accent. Seen in: Pastel Pop (https://brandsweets.com/palettes/playful#pastel-pop), Nursery (https://brandsweets.com/palettes/light#nursery), Lagoon (https://brandsweets.com/palettes/vivid#lagoon). — https://brandsweets.com/colors/khaki

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

- On white (#ffffff): 1.68:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0b838e (4.51:1); AA: background → #545454 (4.52:1); AAA: text → #086068 (7.28:1); AAA: background → #363636 (7.21:1)
- On black (#000000): 12.52:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Prisma** — accent #01d7e4 (Δ 1.827) — https://brandsweets.com/colors/brands/prisma-io
- **UEFA** — primary #00d9f7 (Δ 1.917) — https://brandsweets.com/colors/brands/uefa-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/21dced-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: "#21dced" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.