# #000019

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

## Values

- Hex: `#000019`
- RGB: rgb(0, 0, 25)
- HSL: hsl(240, 100%, 5%)
- OKLCH: oklch(0.096 0.067 264.1)
- Relative luminance: 0.0007
- Nearest named color: Obsidian Shard (#060313, Δ 4.251) — https://brandsweets.com/colors/obsidian-shard
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/000019

## Tints & shades

- Tints (toward white): #000047, #00007a, #0000a8, #0000d6, #0a0aff, #3838ff, #6666ff, #9494ff, #c7c7ff, #f5f5ff
- Shades (toward black): #000019, #000019, #000019, #000019, #000019, #000014, #000014, #000014, #000014, #000014

## Harmonies

- Complementary: #191900
- Analogous: #000d19, #0d0019
- Triadic: #190000, #001900
- Split-complementary: #190d00, #0d1900
- Tetradic: #19000d, #191900, #00190d

## Colors that go with #000019

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Blue Violet** #8a2be2 [harmony, pool: analogous] — Blue Violet is #000019's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Circuit (https://brandsweets.com/palettes/technical#circuit), Render (https://brandsweets.com/colors/brands/render-com), Twitch (https://brandsweets.com/colors/brands/twitch-tv). — https://brandsweets.com/colors/blueviolet
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #000019: 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
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #000019 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: M&M's (https://brandsweets.com/colors/brands/mms-com), Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Forest Green** #228b22 [harmony, pool: triadic] — Forest Green completes a triad with #000019 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Bun (https://brandsweets.com/colors/brands/bun-sh), Instacart (https://brandsweets.com/colors/brands/instacart-com), Prada (https://brandsweets.com/colors/brands/prada-com), Shake Shack (https://brandsweets.com/colors/brands/shakeshack-com). — https://brandsweets.com/colors/forestgreen
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #000019: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), Aesop (https://brandsweets.com/colors/brands/aesop-com), Dyson (https://brandsweets.com/colors/brands/dyson-com), Ubereats (https://brandsweets.com/colors/brands/ubereats-com). — https://brandsweets.com/colors/sienna
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #000019's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Olympics (https://brandsweets.com/colors/brands/olympics-com), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #000019 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), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 39 real palettes, including Glossier's brand system and Uber's brand system put Blue beside #000019, 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), Kia (https://brandsweets.com/colors/brands/kia-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 20.71:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.01:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6161ff (4.66:1); AA: background → #787878 (4.69:1); AAA: text → #8a8aff (7.16:1); AAA: background → #969696 (7:1)

## 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/000019-a19cc4-df994e-251f2d-e9edf1?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: "#000019" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.