# #28fb64

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

## Values

- Hex: `#28fb64`
- RGB: rgb(40, 251, 100)
- HSL: hsl(137, 96%, 57%)
- OKLCH: oklch(0.864 0.248 146.9)
- Relative luminance: 0.7037
- Nearest named color: Cathode Green (#00ff55, Δ 1.951) — https://brandsweets.com/colors/cathode-green
- Moods: vivid
- Page: https://brandsweets.com/colors/28fb64

## Tints & shades

- Tints (toward white): #3cfb72, #50fb81, #64fc8f, #78fc9e, #91fdb0, #a5fdbe, #b9fecc, #cdfedb, #e1fee9, #f5fff8
- Shades (toward black): #0ffa52, #05e645, #04cd3d, #04b436, #039b2e, #037d25, #02641e, #024b16, #012d0d, #001406

## Harmonies

- Complementary: #fb28bf
- Analogous: #56fb28, #28fbcd
- Triadic: #6428fb, #fb6428
- Split-complementary: #cd28fb, #fb2856
- Tetradic: #2856fb, #fb28bf, #fbcd28

## Colors that go with #28fb64

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 #28fb64 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
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #28fb64: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Plum** #dda0dd [harmony: split] — Plum is a split-complement of #28fb64: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Blue** #0000ff [pool] — Two real palettes: MongoDB's brand system and Robinhood's brand system put Blue beside #28fb64, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #28fb64: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #28fb64: two real palettes: Remix's brand system and Prime Video's brand system, as the lead colour. Seen in: Remix (https://brandsweets.com/colors/brands/remix-run), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Red** #ff0000 [pool] — Red is paired with #28fb64 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
- **Yellow Green** #9acd32 [harmony, pool: analogous] — Yellow Green is #28fb64's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Monster Energy (https://brandsweets.com/colors/brands/monsterenergy-com). — https://brandsweets.com/colors/yellowgreen

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

- On white (#ffffff): 1.39:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #038728 (4.67:1); AA: background → #5e5e5e (4.65:1); AAA: text → #02641e (7.38:1); AAA: background → #424242 (7.21:1)
- On black (#000000): 15.07:1 — 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/28fb64-a2bead-bb59d4-1f2d29-ebf1e9?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: "#28fb64" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.