# #99d501

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

## Values

- Hex: `#99d501`
- RGB: rgb(153, 213, 1)
- HSL: hsl(77, 99%, 42%)
- OKLCH: oklch(0.802 0.207 127.3)
- Relative luminance: 0.5436
- Nearest named color: yellowgreen (#9acd32, Δ 2.917) — https://brandsweets.com/colors/yellowgreen
- Moods: vivid
- Page: https://brandsweets.com/colors/99d501

## Tints & shades

- Tints (toward white): #aff401, #bbfe10, #c3fe2f, #cbfe48, #d3fe67, #dcfe85, #e3ff9f, #ecffbd, #f3ffd6, #fcfff5
- Shades (toward black): #8ac101, #7cad01, #719d01, #628901, #547501, #456000, #374c00, #2c3d00, #1d2900, #0f1400

## Harmonies

- Complementary: #3d01d5
- Analogous: #d5a701, #2fd501
- Triadic: #0199d5, #d50199
- Split-complementary: #012fd5, #a701d5
- Tetradic: #01d5a7, #3d01d5, #d5012f

## Colors that go with #99d501

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

- **Taupe** #483c32 [pool] — Taupe is paired with #99d501 in 7 real palettes, including Citrus Grove and Acer's brand system, as the text colour against it. Seen in: Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Acer (https://brandsweets.com/colors/brands/acer-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #99d501 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
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #99d501 in 3 real palettes, including Citrus Grove and Learning App, as the lead colour. Seen in: Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [harmony, pool: triadic] — Deep Sky Blue completes a triad with #99d501 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Remix (https://brandsweets.com/colors/brands/remix-run). — https://brandsweets.com/colors/deepskyblue
- **Light Coral** #f08080 [harmony, pool: triadic] — Light Coral completes a triad with #99d501 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/lightcoral
- **Emerald Green** #50c878 [harmony, pool: analogous] — Emerald Green is #99d501's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Peloton (https://brandsweets.com/colors/brands/peloton-com). — https://brandsweets.com/colors/emerald-green
- **Blue** #0000ff [pool] — Two real palettes: Minecraft's brand system and MongoDB's brand system put Blue beside #99d501, as the accent. Seen in: Minecraft (https://brandsweets.com/colors/brands/minecraft-net), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #99d501: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 1.77:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5b7f01 (4.69:1); AA: background → #4f4f4f (4.63:1); AAA: text → #456000 (7.18:1); AAA: background → #333333 (7.14:1)
- On black (#000000): 11.87:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Monster Energy** — primary #95d600 (Δ 0.501) — https://brandsweets.com/colors/brands/monsterenergy-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/99d501-b3bea2-4e6bdf-232d1f-f1efe9?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: "#99d501" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.