# #3f121f

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

## Values

- Hex: `#3f121f`
- RGB: rgb(63, 18, 31)
- HSL: hsl(343, 56%, 16%)
- OKLCH: oklch(0.261 0.071 5.7)
- Relative luminance: 0.0159
- Nearest named color: Chocolate Kiss (#3c1421, Δ 0.781) — https://brandsweets.com/colors/chocolate-kiss
- Moods: warm, dark, luxury, bold
- Page: https://brandsweets.com/colors/3f121f

## Tints & shades

- Tints (toward white): #5f1b2e, #7f243e, #a32e4f, #c3375f, #cf5477, #d87490, #e194a9, #ebb7c6, #f4d7df, #fdf7f9
- Shades (toward black): #3c111d, #38101b, #300d17, #2c0c15, #280b13, #240a11, #20090f, #18070c, #14060a, #100408

## Harmonies

- Complementary: #124033
- Analogous: #401236, #401c12
- Triadic: #1f4012, #121f40
- Split-complementary: #12401c, #123640
- Tetradic: #364012, #124033, #1c1240

## Colors that go with #3f121f

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 #3f121f: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Squarespace (https://brandsweets.com/colors/brands/squarespace-com), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #3f121f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Subaru (https://brandsweets.com/colors/brands/subaru-com), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: analogous] — Sienna is #3f121f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Harvest (https://brandsweets.com/palettes/warm#harvest), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove). — https://brandsweets.com/colors/sienna
- **Steel Blue** #4682b4 [harmony, pool: triadic] — Steel Blue completes a triad with #3f121f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Astro (https://brandsweets.com/colors/brands/astro-build), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #3f121f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Saffron (https://brandsweets.com/palettes/warm#saffron), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #3f121f in 18 real palettes, including Maple and Wikipedia's brand system, as the accent. Seen in: Maple (https://brandsweets.com/palettes/warm#maple), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 20 real palettes, including Tim Hortons's brand system and Sketch's brand system put Blue beside #3f121f, as the accent. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #3f121f in 7 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour. Seen in: ClickUp (https://brandsweets.com/colors/brands/clickup-com), 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). — https://brandsweets.com/colors/blueviolet

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

- On white (#ffffff): 15.94:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.32:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #ca446a (4.55:1); AA: background → #8a8a8a (4.62:1); AAA: text → #d97893 (7.06:1); AAA: background → #adadad (7.1:1)

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- 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/3f121f-c49ca3-62cb7b-2d211f-f1e9ef?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: "#3f121f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.