# #121f09

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

## Values

- Hex: `#121f09`
- RGB: rgb(18, 31, 9)
- HSL: hsl(95, 55%, 8%)
- OKLCH: oklch(0.221 0.043 134)
- Relative luminance: 0.0113
- Nearest named color: Nightmare (#112211, Δ 1.362) — https://brandsweets.com/colors/nightmare
- Moods: dark, luxury, bold
- Page: https://brandsweets.com/colors/121f09

## Tints & shades

- Tints (toward white): #274314, #3c671e, #518a28, #66ae32, #7cc945, #95d369, #aede8c, #c7e8b0, #e0f2d4, #f9fdf7
- Shades (toward black): #132009, #101c08, #101c08, #0e1807, #0e1807, #0e1807, #0c1406, #0c1406, #091005, #091005

## Harmonies

- Complementary: #160920
- Analogous: #1e2009, #09200b
- Triadic: #091320, #200913
- Split-complementary: #0b0920, #20091e
- Tetradic: #091e20, #160920, #200b09

## Colors that go with #121f09

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 #121f09: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Gusto (https://brandsweets.com/colors/brands/gusto-com), Logitech (https://brandsweets.com/colors/brands/logitech-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/charcoal
- **Firebrick** #b22222 [harmony, pool: triadic] — Firebrick completes a triad with #121f09 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Newsprint (https://brandsweets.com/palettes/editorial#newsprint), Huawei (https://brandsweets.com/colors/brands/huawei-com), Maple (https://brandsweets.com/palettes/warm#maple), Fireside (https://brandsweets.com/palettes/dark#fireside). — https://brandsweets.com/colors/firebrick
- **Sea Green** #2e8b57 [harmony, pool: analogous] — Sea Green is #121f09'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), Asana (https://brandsweets.com/colors/brands/asana-com), Wellness (https://brandsweets.com/palettes/warm#wellness), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/seagreen
- **Slate Blue** #6a5acd [harmony, pool: split] — Slate Blue is a split-complement of #121f09: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: GitLab (https://brandsweets.com/colors/brands/gitlab), Calm (https://brandsweets.com/colors/brands/calm-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: triadic] — Steel Blue completes a triad with #121f09 — 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), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Dark Orchid** #9932cc [harmony, pool: complementary] — Dark Orchid sits directly opposite #121f09 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 #121f09 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), Google (https://brandsweets.com/colors/brands/google-com), Maple (https://brandsweets.com/palettes/warm#maple). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 22 real palettes, including CVS's brand system and Signal's brand system put Blue beside #121f09, as the supporting colour. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), Signal (https://brandsweets.com/colors/brands/signal-org), Bumble (https://brandsweets.com/colors/brands/bumble-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 17.13:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.23:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4c8226 (4.53:1); AA: background → #858585 (4.64:1); AAA: text → #61a630 (7.01:1); AAA: background → #a6a6a6 (7.04:1)

## 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/121f09-aabea2-5d4edf-1f2d20-f0f1e9?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: "#121f09" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.