# #43efcf

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

## Values

- Hex: `#43efcf`
- RGB: rgb(67, 239, 207)
- HSL: hsl(169, 84%, 60%)
- OKLCH: oklch(0.859 0.144 177.1)
- Relative luminance: 0.6743
- Nearest named color: Aphrodite Aqua (#45e9c1, Δ 2.131) — https://brandsweets.com/colors/aphrodite-aqua
- Moods: vivid
- Page: https://brandsweets.com/colors/43efcf

## Tints & shades

- Tints (toward white): #56f0d4, #69f2d9, #77f3dc, #8af5e1, #9cf6e6, #aff8eb, #c2faef, #d0fbf3, #e3fdf8, #f6fefd
- Shades (toward black): #27ecc8, #14e6bf, #12caa8, #10b294, #0d967d, #0b7a66, #096352, #06463b, #042f27, #021310

## Harmonies

- Complementary: #ef4363
- Analogous: #43ef7a, #43b8ef
- Triadic: #cf43ef, #efcf43
- Split-complementary: #ef43b8, #ef7a43
- Tetradic: #7a43ef, #ef4363, #b8ef43

## Colors that go with #43efcf

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 #43efcf: softer than #000 and cool enough to feel like part of the same palette. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Docker (https://brandsweets.com/colors/brands/docker-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #43efcf in 4 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), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #43efcf: 4 real palettes, including Astro's brand system and Prime Video's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Remix (https://brandsweets.com/colors/brands/remix-run), Salesforce (https://brandsweets.com/colors/brands/salesforce-com). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #43efcf in 9 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), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Blossom (https://brandsweets.com/palettes/light#blossom). — https://brandsweets.com/colors/taupe
- **Hot Pink** #ff69b4 [harmony: complementary] — Hot Pink sits directly opposite #43efcf 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/hotpink
- **Plum** #dda0dd [harmony, pool: triadic] — Plum completes a triad with #43efcf — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Blossom (https://brandsweets.com/palettes/light#blossom), Netlify (https://brandsweets.com/colors/brands/netlify-com). — https://brandsweets.com/colors/plum
- **Red** #ff0000 [pool] — Red is paired with #43efcf in 3 real palettes, including Mattel's brand system and Gatorade's brand system, as the supporting colour. Seen in: Mattel (https://brandsweets.com/colors/brands/mattel-com), Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/red
- **Salmon** #fa8072 [harmony: split] — Salmon is a split-complement of #43efcf: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/salmon

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

- On white (#ffffff): 1.45:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0b836d (4.69:1); AA: background → #5c5c5c (4.61:1); AAA: text → #096352 (7.2:1); AAA: background → #404040 (7.15:1)
- On black (#000000): 14.49:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Formula 1** — primary #27f4d2 (Δ 1.405) — https://brandsweets.com/colors/brands/formula1-com
- **Astro** — accent #4bf3c8 (Δ 1.737) — https://brandsweets.com/colors/brands/astro-build

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/43efcf-a2bebc-d459ab-1f2a2d-e9f1ec?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: "#43efcf" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.