# #18bf55

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

## Values

- Hex: `#18bf55`
- RGB: rgb(24, 191, 85)
- HSL: hsl(142, 78%, 42%)
- OKLCH: oklch(0.704 0.194 148.8)
- Relative luminance: 0.3811
- Nearest named color: Intoxicate (#11bb55, Δ 1.21) — https://brandsweets.com/colors/intoxicate
- Moods: vivid
- Page: https://brandsweets.com/colors/18bf55

## Tints & shades

- Tints (toward white): #1bda61, #2ae56e, #45e881, #5ceb90, #77eea3, #92f2b5, #a9f4c4, #c4f8d7, #dbfbe6, #f6fef9
- Shades (toward black): #15ac4d, #139a45, #118d3f, #0f7b37, #0d682e, #0b5626, #08441e, #073618, #042410, #021208

## Harmonies

- Complementary: #bf1881
- Analogous: #2ebf18, #18bfa8
- Triadic: #5518bf, #bf5518
- Split-complementary: #a818bf, #bf182e
- Tetradic: #182ebf, #bf1881, #bfa818

## Colors that go with #18bf55

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 body-text near-black for #18bf55: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Zendesk (https://brandsweets.com/colors/brands/zendesk-com), Docker (https://brandsweets.com/colors/brands/docker-com), Lagoon (https://brandsweets.com/palettes/vivid#lagoon). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #18bf55 in 5 real palettes, including Brilliant's brand system and Console Light, as the accent. Seen in: Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #18bf55 in 9 real palettes, including Obsidian's brand system and Chime's brand system, as the text colour against it. Seen in: Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Chime (https://brandsweets.com/colors/brands/chime-com), Meadow (https://brandsweets.com/palettes/light#meadow), WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com). — https://brandsweets.com/colors/taupe
- **Fuchsia** #ff00ff [harmony: complementary] — Fuchsia sits directly opposite #18bf55 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/fuchsia
- **Hot Pink** #ff69b4 [harmony, pool: split] — Hot Pink is a split-complement of #18bf55: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/hotpink
- **Medium Purple** #9370db [harmony, pool: split] — Medium Purple is a split-complement of #18bf55: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/mediumpurple
- **Blue** #0000ff [pool] — 3 real palettes, including Spotify's brand system and Minecraft's brand system put Blue beside #18bf55, as the accent. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #18bf55 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/cornflowerblue

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

- On white (#ffffff): 2.44:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #11883d (4.55:1); AA: background → #3b3b3b (4.6:1); AAA: text → #0c642c (7.3:1); AAA: background → #1a1a1a (7.15:1)
- On black (#000000): 8.62:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Spotify** — primary #1db954 (Δ 1.716) — https://brandsweets.com/colors/brands/spotify
- **Ubereats** — primary #06c167 (Δ 1.859) — https://brandsweets.com/colors/brands/ubereats-com
- **Obsidian** — accent #22c55e (Δ 1.863) — https://brandsweets.com/colors/brands/obsidian-md
- **Sourcegraph** — primary #3fb950 (Δ 1.925) — https://brandsweets.com/colors/brands/sourcegraph-com

## Curated palettes containing it

- **Terminal** (technical, dark, modern) — #3fb950, #58a6ff, #f778ba, #0b0f14, #e6edf3 — Green for success, blue for links, pink for emphasis — the dark-mode developer family, tuned to sit on near-black without glare. — tool: https://brandsweets.com/palettes/new/3fb950-58a6ff-f778ba-0b0f14-e6edf3 — collection: https://brandsweets.com/palettes/technical
- **Playground** (bold, playful, warm) — #ff8c00, #3b82f6, #22c55e, #fff8e7, #1d1d1d — Orange, blue and green — the colors of playground equipment; loud, cheerful, obviously for kids. — tool: https://brandsweets.com/palettes/new/ff8c00-3b82f6-22c55e-fff8e7-1d1d1d — collection: https://brandsweets.com/palettes/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/18bf55-a2beaf-c659d4-1f2d2a-eaf1e9?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: "#18bf55" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.