# #0b030d

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

## Values

- Hex: `#0b030d`
- RGB: rgb(11, 3, 13)
- HSL: hsl(288, 63%, 3%)
- OKLCH: oklch(0.122 0.032 321)
- Relative luminance: 0.0017
- Nearest named color: Obsidian Shard (#060313, Δ 2.032) — https://brandsweets.com/colors/obsidian-shard
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/0b030d

## Tints & shades

- Tints (toward white): #2e0c36, #4d155b, #701e85, #9027aa, #b133d1, #c059d9, #cf82e3, #dea8eb, #eed1f5, #fcf7fd
- Shades (toward black): #0b030c, #0b030c, #0b030c, #0b030c, #0e0411, #0e0411, #0e0411, #0e0411, #0e0411, #0e0411

## Harmonies

- Complementary: #050c03
- Analogous: #06030c, #0c030a
- Triadic: #0c0b03, #030c0b
- Split-complementary: #0a0c03, #030c06
- Tetradic: #0c0603, #050c03, #030a0c

## Colors that go with #0b030d

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 #0b030d: softer than #000 and cool enough to feel like part of the same palette. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Amazon (https://brandsweets.com/colors/brands/amazon-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: split] — Dark Olive Green is a split-complement of #0b030d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Miro (https://brandsweets.com/colors/brands/miro-com), Cohere (https://brandsweets.com/colors/brands/cohere-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/darkolivegreen
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #0b030d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Asana (https://brandsweets.com/colors/brands/asana-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: triadic] — Sienna completes a triad with #0b030d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #0b030d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Linear (https://brandsweets.com/colors/brands/linear), Calm (https://brandsweets.com/colors/brands/calm-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/slateblue
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #0b030d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Redfin (https://brandsweets.com/colors/brands/redfin-com), Perplexity (https://brandsweets.com/colors/brands/perplexity), Clinic (https://brandsweets.com/palettes/clean#clinic). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #0b030d in 13 real palettes, including Southwest Airlines's brand system and Ahrefs's brand system, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), 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] — 16 real palettes, including Glossier's brand system and Uber's brand system put Blue beside #0b030d, as the accent. Seen in: Glossier (https://brandsweets.com/colors/brands/glossier-com), Uber (https://brandsweets.com/colors/brands/uber-com), Pfizer (https://brandsweets.com/colors/brands/pfizer-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 20.33:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.03:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #b43cd3 (4.53:1); AA: background → #787878 (4.6:1); AAA: text → #cb76e0 (7.21:1); AAA: background → #999999 (7.14:1)

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- 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/0b030d-be9fc1-aacb62-2d1f2a-ece9f1?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: "#0b030d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.