# #f3fc45

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

## Values

- Hex: `#f3fc45`
- RGB: rgb(243, 252, 69)
- HSL: hsl(63, 97%, 63%)
- OKLCH: oklch(0.954 0.192 112.4)
- Relative luminance: 0.8911
- Nearest named color: Biohazard Suit (#fbfb4c, Δ 1.261) — https://brandsweets.com/colors/biohazard-suit
- Moods: vivid
- Page: https://brandsweets.com/colors/f3fc45

## Tints & shades

- Tints (toward white): #f4fc59, #f5fd68, #f7fd7c, #f8fd8b, #f9fea0, #fafeaf, #fbfec3, #fcfed2, #fdffe6, #fefff5
- Shades (toward black): #f1fc27, #effb09, #d7e203, #bac403, #a2ab03, #868d02, #696f02, #4c5001, #303201, #131400

## Harmonies

- Complementary: #4e45fc
- Analogous: #fcaa45, #97fc45
- Triadic: #45f3fc, #fc45f3
- Split-complementary: #4597fc, #aa45fc
- Tetradic: #45fcaa, #4e45fc, #fc4597

## Colors that go with #f3fc45

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 Snapchat's brand system and Robinhood's brand system put Blue beside #f3fc45, as the supporting colour. Seen in: Snapchat (https://brandsweets.com/colors/brands/snapchat-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com), Bumble (https://brandsweets.com/colors/brands/bumble-com), Binance (https://brandsweets.com/colors/brands/binance-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #f3fc45: 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), Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #f3fc45 in 6 real palettes, including Ferrari's brand system and Lay's's brand system, as the lead colour. Seen in: Ferrari (https://brandsweets.com/colors/brands/ferrari-com), Lay's (https://brandsweets.com/colors/brands/lays-com), Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise), Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/crimson
- **Taupe** #483c32 [pool] — Taupe is paired with #f3fc45 in 6 real palettes, including Calvin Klein's brand system and Tommy Hilfiger's brand system, as the lead colour. Seen in: Calvin Klein (https://brandsweets.com/colors/brands/calvinklein-us), Tommy Hilfiger (https://brandsweets.com/colors/brands/tommy-com), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/taupe
- **Tomato** #ff6347 [pool] — 4 real palettes, including Crayon Box and Night Market put Tomato beside #f3fc45, as the lead colour. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Night Market (https://brandsweets.com/palettes/vivid#night-market), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/tomato
- **Violet** #ee82ee [harmony, pool: split] — Violet is a split-complement of #f3fc45: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Gumroad (https://brandsweets.com/colors/brands/gumroad-com). — https://brandsweets.com/colors/violet
- **Plum** #dda0dd [harmony: complementary] — Plum sits directly opposite #f3fc45 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/plum
- **Deep Pink** #ff1493 [pool] — 3 real palettes, including JetBrains's brand system and Arcade put Deep Pink beside #f3fc45, as the lead colour. Seen in: JetBrains (https://brandsweets.com/colors/brands/jetbrains-com), Arcade (https://brandsweets.com/palettes/vivid#arcade), Night Market (https://brandsweets.com/palettes/vivid#night-market). — https://brandsweets.com/colors/deeppink

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

- On white (#ffffff): 1.12:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #737902 (4.7:1); AA: background → #6e6e6e (4.57:1); AAA: text → #565a01 (7.35:1); AAA: background → #525252 (7:1)
- On black (#000000): 18.82:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **JetBrains** — accent #fefc4f (Δ 1.712) — https://brandsweets.com/colors/brands/jetbrains-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/f3fc45-b9bea2-4e8ddf-262d1f-f1eee9?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: "#f3fc45" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.