# #21f2e8

A color — vivid. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#21f2e8`
- RGB: rgb(33, 242, 232)
- HSL: hsl(177, 89%, 54%)
- OKLCH: oklch(0.869 0.147 189.4)
- Relative luminance: 0.6965
- Nearest named color: Frozen Boubble (#00eedd, Δ 1.801) — https://brandsweets.com/colors/frozen-boubble
- Moods: vivid
- Page: https://brandsweets.com/colors/21f2e8

## Tints & shades

- Tints (toward white): #35f3ea, #4df5ec, #60f6ee, #78f7f1, #8bf8f3, #9ff9f5, #b7fbf7, #cafcf9, #e2fdfc, #f5fefe
- Shades (toward black): #0eece1, #0cd4ca, #0bbcb3, #0aa49c, #088c85, #07746e, #055c57, #044340, #032b29, #011312

## Harmonies

- Complementary: #f2212c
- Analogous: #21f27f, #2194f2
- Triadic: #e821f2, #f2e821
- Split-complementary: #f22194, #f27f21
- Tetradic: #7f21f2, #f2212c, #94f221

## Colors that go with #21f2e8

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 #21f2e8: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Canopy (https://brandsweets.com/palettes/cool#canopy), Vimeo (https://brandsweets.com/colors/brands/vimeo-com). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #21f2e8's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #21f2e8 in 7 real palettes, including Astro's brand system and Mint Chip, as the text colour against it. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Boeing (https://brandsweets.com/colors/brands/boeing-com), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box). — https://brandsweets.com/colors/taupe
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #21f2e8 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/lightcoral
- **Crimson** #dc143c [pool] — Crimson is paired with #21f2e8 in 3 real palettes, including Formula 1's brand system and Tiffany & Co.'s brand system, as the supporting colour. Seen in: Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Goldenrod** #daa520 [harmony, pool: triadic] — Goldenrod completes a triad with #21f2e8 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark). — https://brandsweets.com/colors/goldenrod
- **Dark Salmon** #e9967a [harmony: split] — Dark Salmon is a split-complement of #21f2e8: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/darksalmon
- **Violet** #ee82ee [harmony: split] — Violet is a split-complement of #21f2e8: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/violet

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

- On white (#ffffff): 1.41:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #08827c (4.67:1); AA: background → #5e5e5e (4.61:1); AAA: text → #06605c (7.41:1); AAA: background → #424242 (7.15:1)
- On black (#000000): 14.93:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/21f2e8-a2bcbe-d4599b-1f282d-e9f1ed?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: "#21f2e8" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.