# #4fc90d

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

## Values

- Hex: `#4fc90d`
- RGB: rgb(79, 201, 13)
- HSL: hsl(99, 88%, 42%)
- OKLCH: oklch(0.737 0.228 138.7)
- Relative luminance: 0.4346
- Nearest named color: Candy Green (#33cc00, Δ 1.671) — https://brandsweets.com/colors/candy-green
- Moods: vivid
- Page: https://brandsweets.com/colors/4fc90d

## Tints & shades

- Tints (toward white): #5ae60f, #68f11e, #7bf23a, #8bf452, #9ef66f, #b2f88c, #c2f9a4, #d5fbc1, #e5fdd9, #f9fef5
- Shades (toward black): #47b60c, #40a30a, #3a9509, #338108, #2b6e07, #245b06, #1c4805, #173a04, #0f2602, #081301

## Harmonies

- Complementary: #870dc9
- Analogous: #adc90d, #0dc929
- Triadic: #0d4fc9, #c90d4f
- Split-complementary: #290dc9, #c90dad
- Tetradic: #0dadc9, #870dc9, #c9290d

## Colors that go with #4fc90d

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Blue** #0000ff [pool] — 4 real palettes, including Minecraft's brand system and Spotify's brand system put Blue beside #4fc90d, as the accent. Seen in: Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Spotify (https://brandsweets.com/colors/brands/spotify), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #4fc90d: 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), Docker (https://brandsweets.com/colors/brands/docker-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/charcoal
- **Taupe** #483c32 [pool] — Taupe is paired with #4fc90d in 8 real palettes, including Minecraft's brand system and Obsidian's brand system, as the lead colour. Seen in: Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Obsidian (https://brandsweets.com/colors/brands/obsidian-md), WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com), Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #4fc90d 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, pool: split] — Hot Pink is a split-complement of #4fc90d: 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
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #4fc90d: 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), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/cornflowerblue
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #4fc90d in 3 real palettes, including Learning App and Playground, as the accent. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/darkorange
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #4fc90d in 3 real palettes, including Brilliant's brand system and MongoDB's brand system, as the accent. Seen in: Brilliant (https://brandsweets.com/colors/brands/brilliant-org), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 2.17:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #358609 (4.6:1); AA: background → #424242 (4.64:1); AAA: text → #276506 (7.12:1); AAA: background → #242424 (7.16:1)
- On black (#000000): 9.69:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Duolingo** — primary #58cc02 (Δ 1.148) — https://brandsweets.com/colors/brands/duolingo
- **Duolingo** — secondary #58cc02 (Δ 1.148) — https://brandsweets.com/colors/brands/duolingo

## Curated palettes containing it

- **Learning App** (playful, vivid, friendly) — #58cc02, #1cb0f6, #ff9600, #ffffff, #1c1c1c — Green, blue and orange at full saturation: the gamified-learning look, where every color is a reward. — tool: https://brandsweets.com/palettes/new/58cc02-1cb0f6-ff9600-ffffff-1c1c1c — collection: https://brandsweets.com/palettes/playful

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4fc90d-a8bea2-664edf-1f2d21-f0f1e9?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: "#4fc90d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.