# #1b040a

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

## Values

- Hex: `#1b040a`
- RGB: rgb(27, 4, 10)
- HSL: hsl(344, 74%, 6%)
- OKLCH: oklch(0.156 0.044 4.7)
- Relative luminance: 0.0034
- Nearest named color: Crow (#180614, Δ 2.172) — https://brandsweets.com/colors/crow
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/1b040a

## Tints & shades

- Tints (toward white): #430a19, #6a1028, #971739, #bf1d48, #df2a5a, #e55279, #eb7a98, #f2a6ba, #f8ced9, #fef6f8
- Shades (toward black): #1b040a, #1b040a, #160308, #160308, #160308, #160308, #160308, #120307, #120307, #120307

## Harmonies

- Complementary: #041b15
- Analogous: #1b0415, #1b0904
- Triadic: #0a1b04, #040a1b
- Split-complementary: #041b09, #04151b
- Tetradic: #151b04, #041b15, #09041b

## Colors that go with #1b040a

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 #1b040a: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Rust** #b7410e [harmony, pool: analogous] — Rust is #1b040a's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Garnet (https://brandsweets.com/palettes/warm#garnet), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty), Semrush (https://brandsweets.com/colors/brands/semrush-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com). — https://brandsweets.com/colors/rust
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #1b040a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: triadic] — Steel Blue completes a triad with #1b040a — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Olympics (https://brandsweets.com/colors/brands/olympics-com), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #1b040a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Redfin (https://brandsweets.com/colors/brands/redfin-com), Perplexity (https://brandsweets.com/colors/brands/perplexity), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #1b040a in 16 real palettes, including Ember and Ahrefs's brand system, as the accent. Seen in: Ember (https://brandsweets.com/palettes/bold#ember), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 18 real palettes, including Robinhood's brand system and Pfizer's brand system put Blue beside #1b040a, as the supporting colour. Seen in: Robinhood (https://brandsweets.com/colors/brands/robinhood-com), Pfizer (https://brandsweets.com/colors/brands/pfizer-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), EA (https://brandsweets.com/colors/brands/ea-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #1b040a in 10 real palettes, including Render's brand system and Twitch's brand system, as the lead colour. Seen in: Render (https://brandsweets.com/colors/brands/render-com), Twitch (https://brandsweets.com/colors/brands/twitch-tv), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Circuit (https://brandsweets.com/palettes/technical#circuit). — https://brandsweets.com/colors/blueviolet

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

- On white (#ffffff): 19.66:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.07:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #df2657 (4.55:1); AA: background → #7a7a7a (4.58:1); AAA: text → #e96d8e (7.04:1); AAA: background → #9c9c9c (7.16:1)

## 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
- luxury: https://brandsweets.com/fonts/mood/luxury

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/1b040a-c49ca2-62cb7c-2d221f-f1e9ef?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: "#1b040a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.