# #e51520

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

## Values

- Hex: `#e51520`
- RGB: rgb(229, 21, 32)
- HSL: hsl(357, 83%, 49%)
- OKLCH: oklch(0.585 0.231 27)
- Relative luminance: 0.173
- Nearest named color: Alarm (#ec0003, Δ 1.627) — https://brandsweets.com/colors/alarm
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/e51520

## Tints & shades

- Tints (toward white): #eb2832, #ed4048, #ef575f, #f26e75, #f4868b, #f5989d, #f8b0b3, #fac7ca, #fcdee0, #fef6f6
- Shades (toward black): #d2141d, #bb111a, #a81017, #910d14, #7e0c11, #670a0e, #54080c, #3d0608, #2a0406, #130203

## Harmonies

- Complementary: #15e5da
- Analogous: #e51587, #e57315
- Triadic: #20e515, #1520e5
- Split-complementary: #15e573, #1587e5
- Tetradic: #87e515, #15e5da, #7315e5

## Colors that go with #e51520

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 #e51520: 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), IHG (https://brandsweets.com/colors/brands/ihg-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #e51520 — 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
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #e51520: 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), Wired (https://brandsweets.com/colors/brands/wired-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #e51520 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 #e51520, 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 #e51520: 5 real palettes, including Walgreens's brand system and Behance's brand system, as the accent. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Behance (https://brandsweets.com/colors/brands/behance-net), NASA (https://brandsweets.com/colors/brands/nasa-gov), Tide (https://brandsweets.com/colors/brands/tide-com). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #e51520: 18 real palettes, including Netflix's brand system and Costco's brand system, as the accent. Seen in: Netflix (https://brandsweets.com/colors/brands/netflix), Costco (https://brandsweets.com/colors/brands/costco-com), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #e51520: 6 real palettes, including Databricks's brand system and Google's brand system, as the accent. Seen in: Databricks (https://brandsweets.com/colors/brands/databricks-com), Google (https://brandsweets.com/colors/brands/google-com), Replit (https://brandsweets.com/colors/brands/replit), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 4.71:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #b11019 (7.1:1)
- On black (#000000): 4.46:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e91620 (4.6:1); AA: background → #fafafa (4.51:1); AAA: text → #f16a70 (7.04:1)

## Brands using this color

- **Netflix** — primary #e50914 (Δ 0.688) — https://brandsweets.com/colors/brands/netflix
- **Nintendo** — secondary #e60012 (Δ 0.848) — https://brandsweets.com/colors/brands/nintendo-com
- **Pinterest** — accent #e60023 (Δ 0.85) — https://brandsweets.com/colors/brands/pinterest-com
- **Pinterest** — primary #e40424 (Δ 0.896) — https://brandsweets.com/colors/brands/pinterest-com
- **Pizza Hut** — secondary #e91c24 (Δ 1.038) — https://brandsweets.com/colors/brands/pizzahut-com
- **Toyota** — secondary #e10a1d (Δ 1.074) — https://brandsweets.com/colors/brands/toyota-com
- **Marvel** — accent #e62429 (Δ 1.113) — https://brandsweets.com/colors/brands/marvel-com
- **WWE** — secondary #e40707 (Δ 1.142) — https://brandsweets.com/colors/brands/wwe-com
- **Lay's** — accent #df2027 (Δ 1.188) — https://brandsweets.com/colors/brands/lays-com
- **LG** — secondary #ea1917 (Δ 1.256) — https://brandsweets.com/colors/brands/lg-com
- **Vodafone** — primary #e60000 (Δ 1.267) — https://brandsweets.com/colors/brands/vodafone-com
- **Vodafone** — accent #e60000 (Δ 1.267) — https://brandsweets.com/colors/brands/vodafone-com
- **Lenovo** — secondary #e1251b (Δ 1.309) — https://brandsweets.com/colors/brands/lenovo-com
- **KFC** — primary #e4002b (Δ 1.41) — https://brandsweets.com/colors/brands/kfc-com
- **KFC** — secondary #e4002b (Δ 1.41) — https://brandsweets.com/colors/brands/kfc-com
- **NASCAR** — secondary #e4002b (Δ 1.41) — https://brandsweets.com/colors/brands/nascar-com
- **Pringles** — secondary #ea002a (Δ 1.431) — https://brandsweets.com/colors/brands/pringles-com
- **Gatorade** — secondary #ea0000 (Δ 1.44) — https://brandsweets.com/colors/brands/gatorade-com
- **Formula 1** — accent #e8002d (Δ 1.488) — https://brandsweets.com/colors/brands/formula1-com
- **Wired** — secondary #eb0000 (Δ 1.55) — https://brandsweets.com/colors/brands/wired-com
- **Twitch** — accent #eb0400 (Δ 1.561) — https://brandsweets.com/colors/brands/twitch-tv
- **Formula 1** — secondary #e10600 (Δ 1.646) — https://brandsweets.com/colors/brands/formula1-com
- **native Cybersecurity** — secondary #ec0000 (Δ 1.677) — https://brandsweets.com/colors/brands/crowdstrike-com
- **Pepsi** — secondary #e32934 (Δ 1.73) — https://brandsweets.com/colors/brands/pepsi-com
- **Tinder** — secondary #ec180e (Δ 1.749) — https://brandsweets.com/colors/brands/tinder-com
- **Codecademy** — accent #dc2626 (Δ 1.785) — https://brandsweets.com/colors/brands/codecademy-com
- **Mattel** — secondary #ee0024 (Δ 1.786) — https://brandsweets.com/colors/brands/mattel-com
- **Databricks** — secondary #eb1600 (Δ 1.789) — https://brandsweets.com/colors/brands/databricks-com
- **Doordash** — secondary #eb1700 (Δ 1.817) — https://brandsweets.com/colors/brands/doordash-com
- **Walgreens** — primary #e31836 (Δ 1.839) — https://brandsweets.com/colors/brands/walgreens-com
- **Costco** — primary #e31837 (Δ 1.939) — https://brandsweets.com/colors/brands/costco-com
- **Vercel** — danger #ee0000 (Δ 1.971) — https://brandsweets.com/colors/brands/vercel
- **Pinterest** — secondary #dd0e0e (Δ 1.975) — https://brandsweets.com/colors/brands/pinterest-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/e51520-c49f9c-62cb93-2d251f-f1e9ed?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: "#e51520" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.