# #121721

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

## Values

- Hex: `#121721`
- RGB: rgb(18, 23, 33)
- HSL: hsl(220, 29%, 10%)
- OKLCH: oklch(0.204 0.022 263.9)
- Relative luminance: 0.0085
- Nearest named color: Eigengrau (#16161d, Δ 0.998) — https://brandsweets.com/colors/eigengrau
- Moods: cool, muted, dark, luxury, bold
- Page: https://brandsweets.com/colors/121721

## Tints & shades

- Tints (toward white): #222c3f, #33405c, #415376, #516894, #687eac, #8598bc, #a3b1cc, #bdc7db, #dbe0eb, #f8f9fb
- Shades (toward black): #10151e, #10151e, #0e121a, #0e121a, #0d1017, #0b0e14, #0b0e14, #090c10, #090c10, #07090d

## Harmonies

- Complementary: #211c12
- Analogous: #121e21, #151221
- Triadic: #211217, #172112
- Split-complementary: #211512, #1e2112
- Tetradic: #21121e, #211c12, #122115

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

- On white (#ffffff): 17.95:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.17:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5e76a6 (4.62:1); AA: background → #808080 (4.54:1); AAA: text → #8598bc (7.21:1); AAA: background → #a3a3a3 (7.11:1)

## Brands using this color

- **Chase** — text #101820 (Δ 0.568) — https://brandsweets.com/colors/brands/chase-com
- **Vimeo** — text #141a20 (Δ 1.291) — https://brandsweets.com/colors/brands/vimeo-com
- **Monzo** — text #091723 (Δ 1.389) — https://brandsweets.com/colors/brands/monzo-com
- **Warp** — text #1a1522 (Δ 1.657) — https://brandsweets.com/colors/brands/warp-dev
- **Asana** — secondary #151b26 (Δ 1.715) — https://brandsweets.com/colors/brands/asana-com
- **MongoDB** — text #061621 (Δ 1.914) — https://brandsweets.com/colors/brands/mongodb-com
- **JetBrains** — text #19191c (Δ 1.922) — https://brandsweets.com/colors/brands/jetbrains-com

## Curated palettes containing it

- **Blueprint** (technical, cool, modern, dark) — #38bdf8, #818cf8, #fbbf24, #0f172a, #e2e8f0 — Cyan and indigo on navy is the developer-tool look; amber is the only warm note, so it always reads as 'attention'. — tool: https://brandsweets.com/palettes/new/38bdf8-818cf8-fbbf24-0f172a-e2e8f0 — collection: https://brandsweets.com/palettes/technical
- **Console Light** (technical, clean, light) — #2563eb, #52525b, #16a34a, #fafafa, #18181b — A sober docs palette: one blue for interactive, one green for success, zinc greys for everything else. — tool: https://brandsweets.com/palettes/new/2563eb-52525b-16a34a-fafafa-18181b — collection: https://brandsweets.com/palettes/technical
- **Graphite** (technical, muted, dark, modern) — #a1a1aa, #71717a, #f59e0b, #18181b, #f4f4f5 — A greyscale system with a single amber — the accent does all the work, so allow one per screen. — tool: https://brandsweets.com/palettes/new/a1a1aa-71717a-f59e0b-18181b-f4f4f5 — collection: https://brandsweets.com/palettes/technical
- **Indigo SaaS** (modern, cool, clean) — #4f46e5, #6b7280, #10b981, #ffffff, #111827 — The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states. — tool: https://brandsweets.com/palettes/new/4f46e5-6b7280-10b981-ffffff-111827 — collection: https://brandsweets.com/palettes/modern
- **Slate Workspace** (minimal, cool, clean, modern) — #0f172a, #64748b, #2563eb, #f8fafc — Slate on slate with a single blue — the productivity-app look where the interface disappears behind the work. — tool: https://brandsweets.com/palettes/new/0f172a-64748b-2563eb-f8fafc — collection: https://brandsweets.com/palettes/minimal
- **Clinic** (clean, cool, light) — #0e7490, #64748b, #f97316, #f8fafc, #0f172a — Teal reads clinical without the coldness of pure blue; the coral accent adds warmth for reassurance moments. — tool: https://brandsweets.com/palettes/new/0e7490-64748b-f97316-f8fafc-0f172a — collection: https://brandsweets.com/palettes/clean
- **Estate** (luxury, dark, elegant) — #b08d57, #8a97a5, #c9c9c9, #101418, #eef1f4 — Bronze on charcoal signals premium listings; the silver accent handles secondary detail without adding color. — tool: https://brandsweets.com/palettes/new/b08d57-8a97a5-c9c9c9-101418-eef1f4 — collection: https://brandsweets.com/palettes/luxury
- **Cobalt Pop** (bold, cool, vivid, modern) — #1e40af, #111827, #fb7185, #ffffff — One deep cobalt and one hot pink on white — a two-accent system for launches and campaign pages that need punch. — tool: https://brandsweets.com/palettes/new/1e40af-111827-fb7185-ffffff — collection: https://brandsweets.com/palettes/bold

## 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/121721-9ca5c4-df694e-211f2d-e9f0f1?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: "#121721" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.