# #e51f3a

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

## Values

- Hex: `#e51f3a`
- RGB: rgb(229, 31, 58)
- HSL: hsl(352, 79%, 51%)
- OKLCH: oklch(0.592 0.225 22.2)
- Relative luminance: 0.1794
- Nearest named color: Barberry (#ee1133, Δ 1.757) — https://brandsweets.com/colors/barberry
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/e51f3a

## Tints & shades

- Tints (toward white): #e7364e, #ea485e, #ec5f72, #ef7686, #f28d9a, #f49faa, #f6b6bf, #f9cdd3, #fbdfe3, #fef6f7
- Shades (toward black): #d21931, #c0162d, #a91428, #921122, #800f1e, #690c19, #520a13, #3b070e, #29050a, #120204

## Harmonies

- Complementary: #1fe5ca
- Analogous: #e51f9c, #e5681f
- Triadic: #3ae51f, #1f3ae5
- Split-complementary: #1fe568, #1f9ce5
- Tetradic: #9ce51f, #1fe5ca, #681fe5

## Colors that go with #e51f3a

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 #e51f3a: 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), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), 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 #e51f3a — 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 #e51f3a: 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 #e51f3a 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 #e51f3a, 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 #e51f3a: 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 #e51f3a: 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
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #e51f3a: 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), Figma (https://brandsweets.com/colors/brands/figma), Replit (https://brandsweets.com/colors/brands/replit). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 4.58:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #ad1429 (7.22:1)
- On black (#000000): 4.59:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #ee6d7e (7.12:1)

## Brands using this color

- **Costco** — primary #e31837 (Δ 0.72) — https://brandsweets.com/colors/brands/costco-com
- **Walgreens** — primary #e31836 (Δ 0.744) — https://brandsweets.com/colors/brands/walgreens-com
- **AliExpress** — secondary #ea0934 (Δ 1.194) — https://brandsweets.com/colors/brands/aliexpress-com
- **Pepsi** — secondary #e32934 (Δ 1.195) — https://brandsweets.com/colors/brands/pepsi-com
- **Tiffany & Co.** — secondary #e50739 (Δ 1.199) — https://brandsweets.com/colors/brands/tiffany-com
- **Formula 1** — accent #e8002d (Δ 1.469) — https://brandsweets.com/colors/brands/formula1-com
- **Pringles** — secondary #ea002a (Δ 1.688) — https://brandsweets.com/colors/brands/pringles-com
- **KFC** — primary #e4002b (Δ 1.72) — https://brandsweets.com/colors/brands/kfc-com
- **KFC** — secondary #e4002b (Δ 1.72) — https://brandsweets.com/colors/brands/kfc-com
- **NASCAR** — secondary #e4002b (Δ 1.72) — https://brandsweets.com/colors/brands/nascar-com
- **Marvel** — accent #e62429 (Δ 1.788) — https://brandsweets.com/colors/brands/marvel-com
- **Wendy's** — primary #dd1438 (Δ 1.984) — https://brandsweets.com/colors/brands/wendys-com

## Curated palettes containing it

- **Tabloid** (editorial, bold, vivid) — #e11d48, #111111, #facc15, #ffffff — Red, black and yellow on white is the loudest three-color system in print — use it when headlines are the product. — tool: https://brandsweets.com/palettes/new/e11d48-111111-facc15-ffffff — collection: https://brandsweets.com/palettes/editorial
- **Gemstone** (jewel-tones, vivid, dark, luxury) — #0f766e, #7e22ce, #e11d48, #0f0a1a, #f5eef8 — Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic. — tool: https://brandsweets.com/palettes/new/0f766e-7e22ce-e11d48-0f0a1a-f5eef8 — collection: https://brandsweets.com/palettes/jewel-tones

## 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/e51f3a-c49c9d-62cb8a-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: "#e51f3a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.