# #e4401b

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

## Values

- Hex: `#e4401b`
- RGB: rgb(228, 64, 27)
- HSL: hsl(11, 79%, 50%)
- OKLCH: oklch(0.611 0.206 33.6)
- Relative luminance: 0.2024
- Nearest named color: Baptism by Fire (#e6490b, Δ 1.8) — https://brandsweets.com/colors/baptism-by-fire
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/e4401b

## Tints & shades

- Tints (toward white): #e75332, #ea6648, #ec755b, #ee8872, #f19c88, #f4af9f, #f6c2b6, #f9d1c8, #fbe4df, #fef7f6
- Shades (toward black): #cd3918, #bb3416, #a42e13, #922911, #7b220e, #641c0c, #52170a, #3b1107, #290b05, #120502

## Harmonies

- Complementary: #1bbfe4
- Analogous: #e41b5b, #e4a41b
- Triadic: #1be440, #401be4
- Split-complementary: #1be4a4, #1b5be4
- Tetradic: #5be41b, #1bbfe4, #a41be4

## Colors that go with #e4401b

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 #e4401b: 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), HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Logitech (https://brandsweets.com/colors/brands/logitech-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #e4401b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Netflix (https://brandsweets.com/colors/brands/netflix), Coinbase (https://brandsweets.com/colors/brands/coinbase), Wellness (https://brandsweets.com/palettes/warm#wellness), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #e4401b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wired (https://brandsweets.com/colors/brands/wired-com), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), NASCAR (https://brandsweets.com/colors/brands/nascar-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #e4401b in 7 real palettes, including Google's brand system and McDonald's's brand system, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wired (https://brandsweets.com/colors/brands/wired-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 9 real palettes, including Doordash's brand system and Glossier's brand system put Blue beside #e4401b, as the accent. Seen in: Doordash (https://brandsweets.com/colors/brands/doordash-com), Glossier (https://brandsweets.com/colors/brands/glossier-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), Gap (https://brandsweets.com/colors/brands/gap-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #e4401b: 4 real palettes, including Diner and Alpine, as the supporting colour. 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
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #e4401b: 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), Tide (https://brandsweets.com/colors/brands/tide-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #e4401b: 21 real palettes, including Postman's brand system and McDonald's's brand system, as the accent. Seen in: Postman (https://brandsweets.com/colors/brands/postman-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Etsy (https://brandsweets.com/colors/brands/etsy-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 4.16:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #d73c19 (4.62:1); AA: background → #121212 (4.5:1); AAA: text → #a42e13 (7.05:1)
- On black (#000000): 5.05:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #eb7156 (7.03:1)

## Brands using this color

- **Todoist** — secondary #e34432 (Δ 1.503) — https://brandsweets.com/colors/brands/todoist-com
- **Hyundai** — secondary #e63312 (Δ 1.539) — https://brandsweets.com/colors/brands/hyundaiusa-com
- **Todoist** — accent #e44232 (Δ 1.546) — https://brandsweets.com/colors/brands/todoist-com
- **Todoist** — primary #e44434 (Δ 1.685) — https://brandsweets.com/colors/brands/todoist-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/e4401b-c4a89c-62cbab-2d281f-f1e9ec?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: "#e4401b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.