# #efff9f

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

## Values

- Hex: `#efff9f`
- RGB: rgb(239, 255, 159)
- HSL: hsl(70, 100%, 81%)
- OKLCH: oklch(0.967 0.121 116.4)
- Relative luminance: 0.9237
- Nearest named color: Lime Mist (#ddffaa, Δ 2.37) — https://brandsweets.com/colors/lime-mist
- Moods: vivid, light, clean
- Page: https://brandsweets.com/colors/efff9f

## Tints & shades

- Tints (toward white): #f1ffa8, #f1ffad, #f3ffb8, #f5ffc2, #f7ffcc, #f7ffd1, #f9ffdb, #fbffe5, #fcffeb, #fdfff5
- Shades (toward black): #e8ff75, #e2ff52, #dbff29, #d4ff00, #b7db00, #95b300, #738a00, #516100, #333d00, #111400

## Harmonies

- Complementary: #ae9eff
- Analogous: #ffdf9e, #beff9e
- Triadic: #9eefff, #ff9eef
- Split-complementary: #9ebeff, #df9eff
- Tetradic: #9effdf, #ae9eff, #ff9ebe

## Colors that go with #efff9f

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 #efff9f: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Zendesk (https://brandsweets.com/colors/brands/zendesk-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: triadic] — Deep Sky Blue completes a triad with #efff9f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Cursor (https://brandsweets.com/colors/brands/cursor-com), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Calendly (https://brandsweets.com/colors/brands/calendly-com). — https://brandsweets.com/colors/deepskyblue
- **Goldenrod** #daa520 [harmony, pool: analogous] — Goldenrod is #efff9f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Harvest (https://brandsweets.com/palettes/warm#harvest), Fireside (https://brandsweets.com/palettes/dark#fireside), Candlelight (https://brandsweets.com/palettes/warm#candlelight). — https://brandsweets.com/colors/goldenrod
- **Plum** #dda0dd [harmony, pool: complementary] — Plum sits directly opposite #efff9f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Blossom (https://brandsweets.com/palettes/light#blossom). — https://brandsweets.com/colors/plum
- **Amber** #ffbf00 [pool] — Amber is paired with #efff9f in 6 real palettes, including Gumroad's brand system and Maple, as the accent. Seen in: Gumroad (https://brandsweets.com/colors/brands/gumroad-com), Maple (https://brandsweets.com/palettes/warm#maple), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Ember (https://brandsweets.com/palettes/bold#ember). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 5 real palettes, including Snapchat's brand system and Bumble's brand system put Blue beside #efff9f, as the supporting colour. Seen in: Snapchat (https://brandsweets.com/colors/brands/snapchat-com), Bumble (https://brandsweets.com/colors/brands/bumble-com), Binance (https://brandsweets.com/colors/brands/binance-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 4 real palettes, including Nursery and Garden Wedding put Blush Pink beside #efff9f, as the lead colour. Seen in: Nursery (https://brandsweets.com/palettes/light#nursery), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/blush-pink
- **Burlywood** #deb887 [pool] — Burlywood is paired with #efff9f in 4 real palettes, including Coffee Bar and Chalkboard, as the accent. Seen in: Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Polaroid (https://brandsweets.com/palettes/light#polaroid), Kiln (https://brandsweets.com/palettes/dark#kiln). — https://brandsweets.com/colors/burlywood

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

- On white (#ffffff): 1.08:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #667a00 (4.83:1); AA: background → #707070 (4.59:1); AAA: text → #4d5c00 (7.38:1); AAA: background → #545454 (7.02:1)
- On black (#000000): 19.47:1 — AA pass, AA-large pass, AAA pass

## Fonts for this mood

- clean: https://brandsweets.com/fonts/mood/clean

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/efff9f-b6bea2-4e7cdf-252d1f-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: "#efff9f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.