# #28fb9f

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

## Values

- Hex: `#28fb9f`
- RGB: rgb(40, 251, 159)
- HSL: hsl(154, 96%, 57%)
- OKLCH: oklch(0.873 0.2 157.3)
- Relative luminance: 0.7195
- Nearest named color: mediumspringgreen (#00fa9a, Δ 0.919) — https://brandsweets.com/colors/mediumspringgreen
- Moods: vivid
- Page: https://brandsweets.com/colors/28fb9f

## Tints & shades

- Tints (toward white): #3cfba8, #50fbb1, #64fcba, #78fcc3, #91fdce, #a5fdd7, #b9fee0, #cdfee9, #e1fef2, #f5fffb
- Shades (toward black): #0ffa94, #05e684, #04cd76, #04b468, #039b59, #037d48, #02643a, #024b2b, #012d1a, #00140c

## Harmonies

- Complementary: #fb2883
- Analogous: #28fb36, #28edfb
- Triadic: #9f28fb, #fb9f28
- Split-complementary: #fb28ed, #fb3628
- Tetradic: #3628fb, #fb2883, #edfb28

## Colors that go with #28fb9f

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #28fb9f 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/violet
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #28fb9f: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #28fb9f: 3 real palettes, including Prime Video's brand system and Remix's brand system, as the supporting colour. Seen in: Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Remix (https://brandsweets.com/colors/brands/remix-run), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue
- **Light Coral** #f08080 [harmony: split] — Light Coral is a split-complement of #28fb9f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/lightcoral
- **Crimson** #dc143c [pool] — Crimson is paired with #28fb9f in two real palettes: Formula 1's brand system and Wise's brand system, as the supporting colour. Seen in: Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/crimson
- **Red** #ff0000 [pool] — Red is paired with #28fb9f in two real palettes: Gatorade's brand system and Wise's brand system, as the supporting colour. Seen in: Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/red
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #28fb9f in two real palettes: MongoDB's brand system and Docker's brand system, as the supporting colour. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #28fb9f in two real palettes: 7-Eleven's brand system and Astro's brand system, as the lead colour. Seen in: 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 1.36:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #03874e (4.59:1); AA: background → #616161 (4.54:1); AAA: text → #02643a (7.28:1); AAA: background → #454545 (7.03:1)
- On black (#000000): 15.39:1 — 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/28fb9f-a2beb5-d459ca-1f2d2d-e9f1ea?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: "#28fb9f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.