# #28c39f

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

## Values

- Hex: `#28c39f`
- RGB: rgb(40, 195, 159)
- HSL: hsl(166, 66%, 46%)
- OKLCH: oklch(0.732 0.134 172.2)
- Relative luminance: 0.4198
- Nearest named color: Bleached Olive (#55bb88, Δ 3.427) — https://brandsweets.com/colors/bleached-olive
- Moods: vivid
- Page: https://brandsweets.com/colors/28c39f

## Tints & shades

- Tints (toward white): #30d5ae, #45d9b6, #5edec0, #73e2c8, #88e7d1, #9eebd9, #b3efe1, #ccf5eb, #e1f9f3, #f7fdfc
- Shades (toward black): #24b291, #21a183, #1d8c72, #197b64, #166a56, #125948, #0f483b, #0a3329, #07221c, #03110e

## Harmonies

- Complementary: #c3284c
- Analogous: #28c351, #2899c3
- Triadic: #9f28c3, #c39f28
- Split-complementary: #c32899, #c35128
- Tetradic: #5128c3, #c3284c, #99c328

## Colors that go with #28c39f

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 #28c39f: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Docker (https://brandsweets.com/colors/brands/docker-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/charcoal
- **Hot Pink** #ff69b4 [harmony, pool: complementary] — Hot Pink sits directly opposite #28c39f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/hotpink
- **Blue** #0000ff [pool] — 4 real palettes, including Unity's brand system and Canva's brand system put Blue beside #28c39f, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #28c39f in 4 real palettes, including DuckDuckGo's brand system and Riot Games's brand system, as the supporting colour. Seen in: DuckDuckGo (https://brandsweets.com/colors/brands/duckduckgo-com), Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Diner (https://brandsweets.com/palettes/vivid#diner), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com). — https://brandsweets.com/colors/crimson
- **Mustard Yellow** #ffdb58 [pool] — 6 real palettes, including Fresh Juice and Crayon Box put Mustard Yellow beside #28c39f, as the supporting colour. Seen in: Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Meadow (https://brandsweets.com/palettes/light#meadow), Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #28c39f in 4 real palettes, including Khan Academy's brand system and Docker's brand system, as the accent. Seen in: Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Docker (https://brandsweets.com/colors/brands/docker-com), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #28c39f in 17 real palettes, including Chime's brand system and Crayon Box, as the lead colour. Seen in: Chime (https://brandsweets.com/colors/brands/chime-com), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Resort (https://brandsweets.com/palettes/light#resort), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth). — https://brandsweets.com/colors/taupe
- **Light Coral** #f08080 [harmony, pool: split] — Light Coral is a split-complement of #28c39f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/lightcoral

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

- On white (#ffffff): 2.23:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1b836b (4.66:1); AA: background → #404040 (4.64:1); AAA: text → #14614f (7.36:1); AAA: background → #212121 (7.21:1)
- On black (#000000): 9.4:1 — 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/28c39f-a2bebb-d459b1-1f2a2d-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: "#28c39f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.