# #51b643

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

## Values

- Hex: `#51b643`
- RGB: rgb(81, 182, 67)
- HSL: hsl(113, 46%, 49%)
- OKLCH: oklch(0.692 0.18 141.3)
- Relative luminance: 0.3561
- Nearest named color: Exit Light (#55bb33, Δ 2.132) — https://brandsweets.com/colors/exit-light
- Moods: neutral
- Page: https://brandsweets.com/colors/51b643

## Tints & shades

- Tints (toward white): #60c054, #72c766, #83cd79, #94d48c, #a5db9e, #b3e1ad, #c4e8c0, #d6eed2, #e7f5e5, #f8fcf8
- Shades (toward black): #4aa83e, #429537, #3b8632, #33732b, #2d6525, #24521e, #1e4319, #153012, #0f220c, #070f06

## Harmonies

- Complementary: #a943b6
- Analogous: #8ab643, #43b670
- Triadic: #4351b6, #b64351
- Split-complementary: #7043b6, #b6438a
- Tetradic: #438ab6, #a943b6, #b67043

## Colors that go with #51b643

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 #51b643: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Zendesk (https://brandsweets.com/colors/brands/zendesk-com), 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
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #51b643 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 #51b643 in 8 real palettes, including Meadow and Obsidian's brand system, as the text colour against it. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow), Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Acer (https://brandsweets.com/colors/brands/acer-com). — https://brandsweets.com/colors/taupe
- **Orchid** #da70d6 [harmony: complementary] — Orchid sits directly opposite #51b643 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/orchid
- **Hot Pink** #ff69b4 [harmony, pool: split] — Hot Pink is a split-complement of #51b643: 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 #51b643: 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 #51b643, 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 #51b643 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/cornflowerblue

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

- On white (#ffffff): 2.59:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #3b8632 (4.52:1); AA: background → #383838 (4.54:1); AAA: text → #2d6525 (7:1); AAA: background → #141414 (7.13:1)
- On black (#000000): 8.12:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Sourcegraph** — primary #3fb950 (Δ 1.404) — 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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/51b643-a2bea2-884edf-1f2d24-eef1e9?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: "#51b643" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.