# #43fef5

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

## Values

- Hex: `#43fef5`
- RGB: rgb(67, 254, 245)
- HSL: hsl(177, 99%, 63%)
- OKLCH: oklch(0.906 0.144 190)
- Relative luminance: 0.7867
- Nearest named color: aqua (#00ffff, Δ 1.635) — https://brandsweets.com/colors/aqua
- Moods: vivid
- Page: https://brandsweets.com/colors/43fef5

## Tints & shades

- Tints (toward white): #58fef6, #67fef7, #7bfef8, #8afef9, #9ffffa, #aefffb, #c2fffc, #d1fffc, #e6fffe, #f5fffe
- Shades (toward black): #25fef3, #06fef1, #01e4d9, #01c6bc, #01ada4, #018e87, #01706a, #00514d, #003330, #001413

## Harmonies

- Complementary: #fe434d
- Analogous: #43fe97, #43aafe
- Triadic: #f543fe, #fef543
- Split-complementary: #fe43aa, #fe9743
- Tetradic: #9743fe, #fe434d, #aafe43

## Colors that go with #43fef5

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 #43fef5: softer than #000 and cool enough to feel like part of the same palette. Seen in: Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), UEFA (https://brandsweets.com/colors/brands/uefa-com), Boeing (https://brandsweets.com/colors/brands/boeing-com), Canopy (https://brandsweets.com/palettes/cool#canopy). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #43fef5'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), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #43fef5 in 5 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), Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery). — https://brandsweets.com/colors/taupe
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #43fef5 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 #43fef5 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
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #43fef5: 3 real palettes, including Astro's brand system and Glacier, as the lead colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Glacier (https://brandsweets.com/palettes/cool#glacier), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/steelblue
- **Coral** #ff7f50 [harmony: split] — Coral is a split-complement of #43fef5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/coral
- **Violet** #ee82ee [harmony: split] — Violet is a split-complement of #43fef5: 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): 1.25:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #01847d (4.57:1); AA: background → #666666 (4.58:1); AAA: text → #00605c (7.43:1); AAA: background → #4a4a4a (7.06:1)
- On black (#000000): 16.73:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Bluesky Social** — accent #00ffff (Δ 1.635) — https://brandsweets.com/colors/brands/bsky-app

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/43fef5-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: "#43fef5" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.