# #121b09

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

## Values

- Hex: `#121b09`
- RGB: rgb(18, 27, 9)
- HSL: hsl(90, 50%, 7%)
- OKLCH: oklch(0.208 0.036 130.7)
- Relative luminance: 0.0093
- Nearest named color: Nightmare (#112211, Δ 2.559) — https://brandsweets.com/colors/nightmare
- Moods: dark, luxury, bold
- Page: https://brandsweets.com/colors/121b09

## Tints & shades

- Tints (toward white): #293d14, #406020, #57822b, #6ea437, #87c34b, #9ecf6e, #b5da90, #cce6b3, #e3f1d5, #fafcf7
- Shades (toward black): #121b09, #0f1708, #0f1708, #0f1708, #0f1708, #0d1306, #0d1306, #0d1306, #0a0f05, #0a0f05

## Harmonies

- Complementary: #12091b
- Analogous: #1b1b09, #091b09
- Triadic: #09121b, #1b0912
- Split-complementary: #09091b, #1b091b
- Tetradic: #091b1b, #12091b, #1b0909

## Colors that go with #121b09

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 #121b09: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Puma (https://brandsweets.com/colors/brands/puma-com), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: analogous] — Sea Green is #121b09's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Next.js (https://brandsweets.com/colors/brands/nextjs-org), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Asana (https://brandsweets.com/colors/brands/asana-com), Kia (https://brandsweets.com/colors/brands/kia-com). — https://brandsweets.com/colors/seagreen
- **Slate Blue** #6a5acd [harmony, pool: split] — Slate Blue is a split-complement of #121b09: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), GitLab (https://brandsweets.com/colors/brands/gitlab), Linear (https://brandsweets.com/colors/brands/linear). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: triadic] — Steel Blue completes a triad with #121b09 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), 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
- **Dark Orchid** #9932cc [harmony, pool: complementary] — Dark Orchid sits directly opposite #121b09 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Peacock (https://brandsweets.com/palettes/vivid#peacock), Laser (https://brandsweets.com/palettes/vivid#laser). — https://brandsweets.com/colors/darkorchid
- **Amber** #ffbf00 [pool] — Amber is paired with #121b09 in 18 real palettes, including Trailhead and Warner Bros.'s brand system, as the accent. Seen in: Trailhead (https://brandsweets.com/palettes/warm#trailhead), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 24 real palettes, including CVS's brand system and Signal's brand system put Blue beside #121b09, as the supporting colour. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), Signal (https://brandsweets.com/colors/brands/signal-org), 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 #121b09 in 10 real palettes, including Yahoo's brand system and Prepare your taste buds...'s brand system, as the supporting colour. Seen in: Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Prepare your taste buds... (https://brandsweets.com/colors/brands/grubhub-com), Klarna US (https://brandsweets.com/colors/brands/klarna-com), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com). — https://brandsweets.com/colors/blueviolet

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

- On white (#ffffff): 17.7:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.19:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #57822b (4.63:1); AA: background → #828282 (4.61:1); AAA: text → #6ea437 (7.03:1); AAA: background → #a3a3a3 (7.02:1)

## 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/121b09-adbea2-514edf-202d1f-f1f1e9?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: "#121b09" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.