# #18bf4f

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

## Values

- Hex: `#18bf4f`
- RGB: rgb(24, 191, 79)
- HSL: hsl(140, 78%, 42%)
- OKLCH: oklch(0.704 0.199 147.8)
- Relative luminance: 0.3802
- Nearest named color: Intoxicate (#11bb55, Δ 1.471) — https://brandsweets.com/colors/intoxicate
- Moods: vivid
- Page: https://brandsweets.com/colors/18bf4f

## Tints & shades

- Tints (toward white): #1bda5b, #2ae568, #45e87b, #5ceb8b, #77ee9f, #92f2b2, #a9f4c2, #c4f8d5, #dbfbe5, #f6fef9
- Shades (toward black): #15ac48, #139a40, #118d3a, #0f7b33, #0d682b, #0b5624, #08441c, #073617, #04240f, #021208

## Harmonies

- Complementary: #bf1887
- Analogous: #33bf18, #18bfa3
- Triadic: #4f18bf, #bf4f18
- Split-complementary: #a318bf, #bf1833
- Tetradic: #1833bf, #bf1887, #bfa318

## Colors that go with #18bf4f

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 #18bf4f: 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). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #18bf4f 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 #18bf4f 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 #18bf4f 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 #18bf4f: 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 #18bf4f: 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 #18bf4f, 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 #18bf4f — 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 → #118839 (4.56:1); AA: background → #3b3b3b (4.59:1); AAA: text → #0c642a (7.31:1); AAA: background → #1a1a1a (7.13:1)
- On black (#000000): 8.6:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Spotify** — primary #1db954 (Δ 1.948) — https://brandsweets.com/colors/brands/spotify

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/18bf4f-a2beaf-c259d4-1f2d2a-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: "#18bf4f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.