# #0b3721

A color — vivid, dark, luxury, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#0b3721`
- RGB: rgb(11, 55, 33)
- HSL: hsl(150, 67%, 13%)
- OKLCH: oklch(0.3 0.062 157.1)
- Relative luminance: 0.0291
- Nearest named color: Pitch-Black Forests (#003322, Δ 1.797) — https://brandsweets.com/colors/pitch-black-forests
- Moods: vivid, dark, luxury, bold
- Page: https://brandsweets.com/colors/0b3721

## Tints & shades

- Tints (toward white): #135e38, #19804d, #21a663, #28c878, #44da8f, #66e1a3, #8ce8ba, #aeefcf, #d4f7e6, #f6fdfa
- Shades (toward black): #0a331f, #092f1c, #082b1a, #082617, #082617, #072214, #061e12, #051a0f, #04150d, #03110a

## Harmonies

- Complementary: #370b21
- Analogous: #0b370b, #0b3737
- Triadic: #210b37, #37210b
- Split-complementary: #370b37, #370b0b
- Tetradic: #0b0b37, #370b21, #37370b

## Colors that go with #0b3721

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 text near-black for #0b3721: softer than #000 and cool enough to feel like part of the same palette. Seen in: Chobani (https://brandsweets.com/colors/brands/chobani-com), Squarespace (https://brandsweets.com/colors/brands/squarespace-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: split] — Crimson is a split-complement of #0b3721: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Vodafone (https://brandsweets.com/colors/brands/vodafone-com), Svelte (https://brandsweets.com/colors/brands/svelte-dev), New Balance (https://brandsweets.com/colors/brands/newbalance-com). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #0b3721 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Headspace (https://brandsweets.com/colors/brands/headspace-com), Loom (https://brandsweets.com/colors/brands/loom-com), Rotten Tomatoes (https://brandsweets.com/colors/brands/rottentomatoes-com), Chevrolet (https://brandsweets.com/colors/brands/chevrolet-com). — https://brandsweets.com/colors/royalblue
- **Rust** #b7410e [harmony, pool: triadic] — Rust completes a triad with #0b3721 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Harvest (https://brandsweets.com/palettes/warm#harvest), IHG (https://brandsweets.com/colors/brands/ihg-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/rust
- **Teal** #008080 [harmony, pool: analogous] — Teal is #0b3721's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Alpine (https://brandsweets.com/palettes/cool#alpine), Saffron (https://brandsweets.com/palettes/warm#saffron). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #0b3721 in 7 real palettes, including McDonald's's brand system and Beach Hut, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including Instacart's brand system and Headspace's brand system put Blue beside #0b3721, as the accent. Seen in: Instacart (https://brandsweets.com/colors/brands/instacart-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 5 real palettes, including Rain Garden and Garden Wedding put Blush Pink beside #0b3721, as the accent. Seen in: Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/blush-pink

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

- On white (#ffffff): 13.27:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.58:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1b8852 (4.69:1); AA: background → #999999 (4.66:1); AAA: text → #22aa66 (7.01:1); AAA: background → #bdbdbd (7.06:1)

## Brands using this color

- **WhatsApp** — secondary #103928 (Δ 1.337) — https://brandsweets.com/colors/brands/whatsapp-com
- **Instacart** — primary #043b2b (Δ 1.771) — https://brandsweets.com/colors/brands/instacart-com

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- 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/0b3721-a2beb3-d459d2-1f2d2c-e9f1ea?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: "#0b3721" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.