# #ef5764

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

## Values

- Hex: `#ef5764`
- RGB: rgb(239, 87, 100)
- HSL: hsl(355, 83%, 64%)
- OKLCH: oklch(0.662 0.187 18.9)
- Relative luminance: 0.2609
- Nearest named color: Aphrodisiac (#e35a63, Δ 2.201) — https://brandsweets.com/colors/aphrodisiac
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ef5764

## Tints & shades

- Tints (toward white): #f16571, #f27882, #f4868f, #f598a0, #f7a6ad, #f8b4ba, #fac7cb, #fbd5d8, #fde8e9, #fef6f6
- Shades (toward black): #ed3b4a, #ea1f30, #d71424, #bb111f, #9f0f1b, #830c16, #670a11, #4b070d, #2f0408, #130203

## Harmonies

- Complementary: #57efe3
- Analogous: #ef57b0, #ef9757
- Triadic: #64ef57, #5764ef
- Split-complementary: #57ef97, #57b0ef
- Tetradic: #b0ef57, #57efe3, #9757ef

## Colors that go with #ef5764

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

- **Cadet Blue** #5f9ea0 [harmony, pool: complementary] — Cadet Blue sits directly opposite #ef5764 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner), Alpine (https://brandsweets.com/palettes/cool#alpine), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #ef5764: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Audi (https://brandsweets.com/colors/brands/audi-com), Lido (https://brandsweets.com/palettes/vivid#lido), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Tumblr (https://brandsweets.com/colors/brands/tumblr-com). — https://brandsweets.com/colors/charcoal
- **Medium Sea Green** #3cb371 [harmony, pool: triadic] — Medium Sea Green completes a triad with #ef5764 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Sourcegraph (https://brandsweets.com/colors/brands/sourcegraph-com), DuckDuckGo (https://brandsweets.com/colors/brands/duckduckgo-com), Heineken (https://brandsweets.com/colors/brands/heineken-com), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/mediumseagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #ef5764 in 7 real palettes, including Google's brand system and Ember, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Ember (https://brandsweets.com/palettes/bold#ember), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Beach Hut (https://brandsweets.com/palettes/light#beach-hut). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 9 real palettes, including Monzo's brand system and Glossier's brand system put Blue beside #ef5764, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Glossier (https://brandsweets.com/colors/brands/glossier-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Doordash (https://brandsweets.com/colors/brands/doordash-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #ef5764: 4 real palettes, including NASA's brand system and Cobalt Pop, as the lead colour. Seen in: NASA (https://brandsweets.com/colors/brands/nasa-gov), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop), Tide (https://brandsweets.com/colors/brands/tide-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #ef5764 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), JBL (https://brandsweets.com/colors/brands/jbl-com), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/cornflowerblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #ef5764: 15 real palettes, including PlanetScale's brand system and Postman's brand system, as the accent. Seen in: PlanetScale (https://brandsweets.com/colors/brands/planetscale-com), Postman (https://brandsweets.com/colors/brands/postman-com), ElevenLabs (https://brandsweets.com/colors/brands/elevenlabs-io), Strava (https://brandsweets.com/colors/brands/strava-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 3.38:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e91627 (4.56:1); AA: background → #242424 (4.6:1); AAA: text → #b1101e (7.09:1)
- On black (#000000): 6.22:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #f16a75 (7.06:1)

## 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/ef5764-c49e9c-62cb8f-2d241f-f1e9ee?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: "#ef5764" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.