# #e71837

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

## Values

- Hex: `#e71837`
- RGB: rgb(231, 24, 55)
- HSL: hsl(351, 81%, 50%)
- OKLCH: oklch(0.592 0.23 22.5)
- Relative luminance: 0.1792
- Nearest named color: Barberry (#ee1133, Δ 1.366) — https://brandsweets.com/colors/barberry
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/e71837

## Tints & shades

- Tints (toward white): #e92f4b, #ec465f, #ee596f, #f07083, #f28797, #f59eab, #f7b5bf, #f9c8cf, #fcdfe3, #fef6f7
- Shades (toward black): #d01632, #bd142d, #a61128, #941023, #7d0d1e, #660b18, #530914, #3c060e, #2a040a, #120204

## Harmonies

- Complementary: #18e7c8
- Analogous: #e7189e, #e76118
- Triadic: #37e718, #1837e7
- Split-complementary: #18e761, #189ee7
- Tetradic: #9ee718, #18e7c8, #6118e7

## Colors that go with #e71837

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 #e71837: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Logitech (https://brandsweets.com/colors/brands/logitech-com), Audi (https://brandsweets.com/colors/brands/audi-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #e71837 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), WWE (https://brandsweets.com/colors/brands/wwe-com), Vercel (https://brandsweets.com/colors/brands/vercel). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #e71837: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Netflix (https://brandsweets.com/colors/brands/netflix), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #e71837: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: NASCAR (https://brandsweets.com/colors/brands/nascar-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #e71837 in 7 real palettes, including Wired's brand system and McDonald's's brand system, as the accent. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Google (https://brandsweets.com/colors/brands/google-com), Maple (https://brandsweets.com/palettes/warm#maple). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including native Cybersecurity's brand system and Doordash's brand system put Blue beside #e71837, as the accent. Seen in: native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), Doordash (https://brandsweets.com/colors/brands/doordash-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Gap (https://brandsweets.com/colors/brands/gap-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #e71837: 5 real palettes, including Walgreens's brand system and NASA's brand system, as the accent. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Behance (https://brandsweets.com/colors/brands/behance-net), MLB (https://brandsweets.com/colors/brands/mlb-com). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #e71837: 18 real palettes, including Costco's brand system and Target : Expect More. Pay Less.'s brand system, as the supporting colour. Seen in: Costco (https://brandsweets.com/colors/brands/costco-com), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), Netflix (https://brandsweets.com/colors/brands/netflix), ElevenLabs (https://brandsweets.com/colors/brands/elevenlabs-io). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 4.58:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #af122a (7.14:1)
- On black (#000000): 4.58:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #ef6b7f (7.08:1)

## Brands using this color

- **AliExpress** — secondary #ea0934 (Δ 0.696) — https://brandsweets.com/colors/brands/aliexpress-com
- **Costco** — primary #e31837 (Δ 0.814) — https://brandsweets.com/colors/brands/costco-com
- **Walgreens** — primary #e31836 (Δ 0.817) — https://brandsweets.com/colors/brands/walgreens-com
- **Formula 1** — accent #e8002d (Δ 1.041) — https://brandsweets.com/colors/brands/formula1-com
- **Tiffany & Co.** — secondary #e50739 (Δ 1.052) — https://brandsweets.com/colors/brands/tiffany-com
- **Pringles** — secondary #ea002a (Δ 1.23) — https://brandsweets.com/colors/brands/pringles-com
- **Pepsi** — secondary #e32934 (Δ 1.448) — https://brandsweets.com/colors/brands/pepsi-com
- **KFC** — primary #e4002b (Δ 1.488) — https://brandsweets.com/colors/brands/kfc-com
- **KFC** — secondary #e4002b (Δ 1.488) — https://brandsweets.com/colors/brands/kfc-com
- **NASCAR** — secondary #e4002b (Δ 1.488) — https://brandsweets.com/colors/brands/nascar-com
- **Pinterest** — accent #e60023 (Δ 1.718) — https://brandsweets.com/colors/brands/pinterest-com
- **Marvel** — accent #e62429 (Δ 1.752) — https://brandsweets.com/colors/brands/marvel-com
- **Pinterest** — primary #e40424 (Δ 1.798) — https://brandsweets.com/colors/brands/pinterest-com
- **Pizza Hut** — secondary #e91c24 (Δ 1.817) — https://brandsweets.com/colors/brands/pizzahut-com
- **Mattel** — secondary #ee0024 (Δ 1.905) — https://brandsweets.com/colors/brands/mattel-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/e71837-c49c9e-62cb89-2d231f-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: "#e71837" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.