# #ffff99

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

## Values

- Hex: `#ffff99`
- RGB: rgb(255, 255, 153)
- HSL: hsl(60, 100%, 80%)
- OKLCH: oklch(0.978 0.124 108.5)
- Relative luminance: 0.9508
- Nearest named color: Butter (#ffff81, Δ 2.419) — https://brandsweets.com/colors/butter
- Moods: vivid, light, clean
- Page: https://brandsweets.com/colors/ffff99

## Tints & shades

- Tints (toward white): #ffffa3, #ffffad, #ffffb3, #ffffbd, #ffffc7, #ffffd1, #ffffdb, #ffffe0, #ffffeb, #fffff5
- Shades (toward black): #ffff70, #ffff4d, #ffff24, #ffff00, #d6d600, #adad00, #8a8a00, #616100, #3d3d00, #141400

## Harmonies

- Complementary: #9999ff
- Analogous: #ffcc99, #ccff99
- Triadic: #99ffff, #ff99ff
- Split-complementary: #99ccff, #cc99ff
- Tetradic: #99ffcc, #9999ff, #ff99cc

## Colors that go with #ffff99

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 #ffff99: 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
- **Goldenrod** #daa520 [harmony, pool: analogous] — Goldenrod is #ffff99'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), Candlelight (https://brandsweets.com/palettes/warm#candlelight), Fireside (https://brandsweets.com/palettes/dark#fireside). — https://brandsweets.com/colors/goldenrod
- **Lilac** #c8a2c8 [harmony, pool: complementary] — Lilac sits directly opposite #ffff99 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Phantom: The money app that'll take you placesLogo PhantomLogo PhantomLogo Phantom (https://brandsweets.com/colors/brands/phantom-com), Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe). — https://brandsweets.com/colors/lilac
- **Amber** #ffbf00 [pool] — Amber is paired with #ffff99 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), Binance (https://brandsweets.com/colors/brands/binance-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/amber
- **Burlywood** #deb887 [pool] — Burlywood is paired with #ffff99 in 4 real palettes, including Polaroid and Coffee Bar, as the accent. Seen in: Polaroid (https://brandsweets.com/palettes/light#polaroid), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Kiln (https://brandsweets.com/palettes/dark#kiln), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard). — https://brandsweets.com/colors/burlywood
- **Copper** #b87333 [pool] — Designers have shipped Copper with #ffff99: 6 real palettes, including Bakery and Desert Road, as the accent. Seen in: Bakery (https://brandsweets.com/palettes/warm#bakery), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #ffff99 in 6 real palettes, including Lay's's brand system and Ferrari's brand system, as the accent. Seen in: Lay's (https://brandsweets.com/colors/brands/lays-com), Ferrari (https://brandsweets.com/colors/brands/ferrari-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #ffff99 in 9 real palettes, including Miro's brand system and Cider, as the supporting colour. Seen in: Miro (https://brandsweets.com/colors/brands/miro-com), Cider (https://brandsweets.com/palettes/warm#cider), Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/darkolivegreen

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

- On white (#ffffff): 1.05:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7a7a00 (4.55:1); AA: background → #737373 (4.52:1); AAA: text → #5c5c00 (7.03:1); AAA: background → #545454 (7.22:1)
- On black (#000000): 20.02:1 — 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/ffff99-bbbea2-4e94df-272d1f-f1ede9?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: "#ffff99" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.