# #d43921

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

## Values

- Hex: `#d43921`
- RGB: rgb(212, 57, 33)
- HSL: hsl(8, 73%, 48%)
- OKLCH: oklch(0.577 0.195 31.7)
- Relative luminance: 0.1703
- Nearest named color: Bacon Strips (#df3f32, Δ 2.788) — https://brandsweets.com/colors/bacon-strips
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/d43921

## Tints & shades

- Tints (toward white): #df4730, #e25b46, #e66e5c, #e98272, #ec9588, #f0a99e, #f3bcb4, #f7d0ca, #fae4e0, #fef7f6
- Shades (toward black): #c2341e, #ac2e1b, #9a2918, #842415, #731f12, #611a0f, #4b140c, #390f09, #230906, #120503

## Harmonies

- Complementary: #21bcd4
- Analogous: #d42163, #d49221
- Triadic: #21d439, #3921d4
- Split-complementary: #21d492, #2163d4
- Tetradic: #63d421, #21bcd4, #9221d4

## Colors that go with #d43921

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 #d43921: 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), IHG (https://brandsweets.com/colors/brands/ihg-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Logitech (https://brandsweets.com/colors/brands/logitech-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #d43921 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Toyota (https://brandsweets.com/colors/brands/toyota-com), WWE (https://brandsweets.com/colors/brands/wwe-com). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #d43921 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Netflix (https://brandsweets.com/colors/brands/netflix), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), 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 #d43921: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Wired (https://brandsweets.com/colors/brands/wired-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #d43921 in 7 real palettes, including McDonald's's brand system and Trailhead, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Wired (https://brandsweets.com/colors/brands/wired-com), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Tim Hortons's brand system and Doordash's brand system put Blue beside #d43921, as the accent. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Doordash (https://brandsweets.com/colors/brands/doordash-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), Glossier (https://brandsweets.com/colors/brands/glossier-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #d43921: 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), MLB (https://brandsweets.com/colors/brands/mlb-com). — https://brandsweets.com/colors/cobalt
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #d43921 in 5 real palettes, including Farmers Market and Magazine Ochre, as the supporting colour. Seen in: Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/darkolivegreen

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

- On white (#ffffff): 4.77:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #a32c19 (7.16:1)
- On black (#000000): 4.41:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #d83a22 (4.55:1); AA: background → #fafafa (4.57:1); AAA: text → #e77665 (7.18:1)

## Brands using this color

- **Svelte** — primary #d43008 (Δ 1.377) — https://brandsweets.com/colors/brands/svelte-dev
- **Svelte** — secondary #d43008 (Δ 1.377) — https://brandsweets.com/colors/brands/svelte-dev
- **Etsy** — secondary #cf4018 (Δ 1.534) — https://brandsweets.com/colors/brands/etsy-com
- **Foot Locker** — secondary #d12e20 (Δ 1.714) — https://brandsweets.com/colors/brands/footlocker-com
- **McDonald's** — secondary #da291c (Δ 1.899) — https://brandsweets.com/colors/brands/mcdonalds-com
- **Casper Sleep** — primary #cc3b31 (Δ 1.924) — https://brandsweets.com/colors/brands/casper-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/d43921-c4a69c-62cba6-2d271f-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: "#d43921" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.