# #ef3997

A color — warm, vivid, playful, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#ef3997`
- RGB: rgb(239, 57, 151)
- HSL: hsl(329, 85%, 58%)
- OKLCH: oklch(0.647 0.229 354.3)
- Relative luminance: 0.2351
- Nearest named color: Fabulous Fuchsia (#ee1188, Δ 3.465) — https://brandsweets.com/colors/fabulous-fuchsia
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ef3997

## Tints & shades

- Tints (toward white): #f04ca1, #f25fab, #f471b5, #f584bf, #f797c8, #f8aad2, #fabddc, #fbd0e6, #fde3f0, #fef6fa
- Shades (toward black): #ed218b, #de127b, #c6106e, #aa0e5e, #920c51, #7b0a44, #5e0834, #470627, #2a0318, #13020a

## Harmonies

- Complementary: #39ef91
- Analogous: #ec39ef, #ef393c
- Triadic: #97ef39, #3997ef
- Split-complementary: #3cef39, #39efec
- Tetradic: #efec39, #39ef91, #393cef

## Colors that go with #ef3997

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

- **Crimson** #dc143c [pool] — Crimson is paired with #ef3997 in 4 real palettes, including The Ordinary's brand system and Snyk's brand system, as the supporting colour. Seen in: The Ordinary (https://brandsweets.com/colors/brands/theordinary-com), Snyk (https://brandsweets.com/colors/brands/snyk-io), Redfin (https://brandsweets.com/colors/brands/redfin-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/crimson
- **Light Sea Green** #20b2aa [harmony: complementary] — Light Sea Green sits directly opposite #ef3997 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/lightseagreen
- **Cadet Blue** #5f9ea0 [harmony, pool: split] — Cadet Blue is a split-complement of #ef3997: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/cadetblue
- **Medium Sea Green** #3cb371 [harmony, pool: split] — Medium Sea Green is a split-complement of #ef3997: 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/mediumseagreen
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #ef3997: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/charcoal
- **Gold** #ffd700 [pool] — Gold shows up next to #ef3997 in 3 real palettes, including Night Market and Tabloid, as the accent. Seen in: Night Market (https://brandsweets.com/palettes/vivid#night-market), Tabloid (https://brandsweets.com/palettes/editorial#tabloid), Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise). — https://brandsweets.com/colors/gold
- **Tomato** #ff6347 [pool] — 3 real palettes, including Night Market and Sunset Boulevard put Tomato beside #ef3997, as the lead colour. Seen in: Night Market (https://brandsweets.com/palettes/vivid#night-market), Sunset Boulevard (https://brandsweets.com/palettes/warm#sunset-boulevard), Airbnb (https://brandsweets.com/colors/brands/airbnb). — https://brandsweets.com/colors/tomato
- **Steel Blue** #4682b4 [harmony, pool: triadic] — Steel Blue completes a triad with #ef3997 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/steelblue

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

- On white (#ffffff): 3.68:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e2127e (4.54:1); AA: background → #1c1c1c (4.63:1); AAA: text → #aa0e5e (7.16:1)
- On black (#000000): 5.7:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #f25fab (7:1)

## Brands using this color

- **T-Mobile** — secondary #f6288f (Δ 1.984) — https://brandsweets.com/colors/brands/t-mobile-com

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- playful: https://brandsweets.com/fonts/mood/playful
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/ef3997-c49cac-62cb62-2d1f21-f1e9f1?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: "#ef3997" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.