# #e51017

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

## Values

- Hex: `#e51017`
- RGB: rgb(229, 16, 23)
- HSL: hsl(358, 87%, 48%)
- OKLCH: oklch(0.583 0.233 28)
- Relative luminance: 0.1709
- Nearest named color: Alarm (#ec0003, Δ 1.411) — https://brandsweets.com/colors/alarm
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/e51017

## Tints & shades

- Tints (toward white): #ef1f26, #f1373d, #f34f54, #f4666b, #f67e82, #f89699, #f9aeb0, #fbc6c8, #fddedf, #fef5f6
- Shades (toward black): #d20f15, #ba0d13, #a70c11, #8f0a0e, #7c090c, #69070b, #510608, #3e0406, #260304, #130102

## Harmonies

- Complementary: #10e5de
- Analogous: #e51081, #e57310
- Triadic: #17e510, #1017e5
- Split-complementary: #10e573, #1081e5
- Tetradic: #81e510, #10e5de, #7310e5

## Colors that go with #e51017

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 #e51017: 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 #e51017 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: WWE (https://brandsweets.com/colors/brands/wwe-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-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 #e51017: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), 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). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #e51017 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 #e51017, 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 #e51017: 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 #e51017: 18 real palettes, including Netflix's brand system and Target : Expect More. Pay Less.'s brand system, as the accent. Seen in: Netflix (https://brandsweets.com/colors/brands/netflix), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Costco (https://brandsweets.com/colors/brands/costco-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #e51017: 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): 4.75:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #b00c12 (7.22:1)
- On black (#000000): 4.42:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #ea1017 (4.58:1); AA: background → #fafafa (4.55:1); AAA: text → #f56b70 (7.22:1)

## Brands using this color

- **Netflix** — primary #e50914 (Δ 0.251) — https://brandsweets.com/colors/brands/netflix
- **Nintendo** — secondary #e60012 (Δ 0.481) — https://brandsweets.com/colors/brands/nintendo-com
- **WWE** — secondary #e40707 (Δ 0.659) — https://brandsweets.com/colors/brands/wwe-com
- **Vodafone** — primary #e60000 (Δ 0.781) — https://brandsweets.com/colors/brands/vodafone-com
- **Vodafone** — accent #e60000 (Δ 0.781) — https://brandsweets.com/colors/brands/vodafone-com
- **Toyota** — secondary #e10a1d (Δ 1.012) — https://brandsweets.com/colors/brands/toyota-com
- **Pinterest** — accent #e60023 (Δ 1.047) — https://brandsweets.com/colors/brands/pinterest-com
- **Pinterest** — primary #e40424 (Δ 1.089) — https://brandsweets.com/colors/brands/pinterest-com
- **Gatorade** — secondary #ea0000 (Δ 1.12) — https://brandsweets.com/colors/brands/gatorade-com
- **Formula 1** — secondary #e10600 (Δ 1.234) — https://brandsweets.com/colors/brands/formula1-com
- **LG** — secondary #ea1917 (Δ 1.259) — https://brandsweets.com/colors/brands/lg-com
- **Wired** — secondary #eb0000 (Δ 1.275) — https://brandsweets.com/colors/brands/wired-com
- **Twitch** — accent #eb0400 (Δ 1.296) — https://brandsweets.com/colors/brands/twitch-tv
- **Lenovo** — secondary #e1251b (Δ 1.299) — https://brandsweets.com/colors/brands/lenovo-com
- **Pizza Hut** — secondary #e91c24 (Δ 1.327) — https://brandsweets.com/colors/brands/pizzahut-com
- **Lay's** — accent #df2027 (Δ 1.41) — https://brandsweets.com/colors/brands/lays-com
- **native Cybersecurity** — secondary #ec0000 (Δ 1.442) — https://brandsweets.com/colors/brands/crowdstrike-com
- **Marvel** — accent #e62429 (Δ 1.491) — https://brandsweets.com/colors/brands/marvel-com
- **Databricks** — secondary #eb1600 (Δ 1.595) — https://brandsweets.com/colors/brands/databricks-com
- **Doordash** — secondary #eb1700 (Δ 1.629) — https://brandsweets.com/colors/brands/doordash-com
- **Tinder** — secondary #ec180e (Δ 1.677) — https://brandsweets.com/colors/brands/tinder-com
- **KFC** — primary #e4002b (Δ 1.69) — https://brandsweets.com/colors/brands/kfc-com
- **KFC** — secondary #e4002b (Δ 1.69) — https://brandsweets.com/colors/brands/kfc-com
- **NASCAR** — secondary #e4002b (Δ 1.69) — https://brandsweets.com/colors/brands/nascar-com
- **Pinterest** — secondary #dd0e0e (Δ 1.723) — https://brandsweets.com/colors/brands/pinterest-com
- **Pringles** — secondary #ea002a (Δ 1.743) — https://brandsweets.com/colors/brands/pringles-com
- **Vercel** — danger #ee0000 (Δ 1.8) — https://brandsweets.com/colors/brands/vercel
- **Formula 1** — accent #e8002d (Δ 1.835) — https://brandsweets.com/colors/brands/formula1-com
- **Codecademy** — accent #dc2626 (Δ 1.911) — https://brandsweets.com/colors/brands/codecademy-com
- **Walgreens** — secondary #e62600 (Δ 1.94) — https://brandsweets.com/colors/brands/walgreens-com
- **Mattel** — secondary #ee0024 (Δ 1.978) — 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/e51017-c49f9c-62cb95-2d251f-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: "#e51017" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.