# #2b1f2d

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

## Values

- Hex: `#2b1f2d`
- RGB: rgb(43, 31, 45)
- HSL: hsl(291, 18%, 15%)
- OKLCH: oklch(0.26 0.031 321.6)
- Relative luminance: 0.0168
- Nearest named color: Black Velvet (#222233, Δ 2.018) — https://brandsweets.com/colors/black-velvet
- Moods: cool, muted, dark, luxury, bold
- Page: https://brandsweets.com/colors/2b1f2d

## Tints & shades

- Tints (toward white): #423045, #5c4360, #735478, #8a6490, #9f7ea5, #b196b6, #c3aec7, #d5c6d7, #e9e1ea, #fbf9fb
- Shades (toward black): #281d2a, #251b27, #221924, #201721, #1d151e, #171118, #140f15, #110d12, #0e0a0f, #0b080c

## Harmonies

- Complementary: #212d1f
- Analogous: #241f2d, #2d1f28
- Triadic: #2d2b1f, #1f2d2b
- Split-complementary: #282d1f, #1f2d24
- Tetradic: #2d241f, #212d1f, #1f282d

## Colors that go with #2b1f2d

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 text near-black for #2b1f2d: softer than #000 and cool enough to feel like part of the same palette. Seen in: Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Boeing (https://brandsweets.com/colors/brands/boeing-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: split] — Dark Olive Green is a split-complement of #2b1f2d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Cohere (https://brandsweets.com/colors/brands/cohere-com), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/darkolivegreen
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #2b1f2d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Wellness (https://brandsweets.com/palettes/warm#wellness), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: triadic] — Sienna completes a triad with #2b1f2d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Harvest (https://brandsweets.com/palettes/warm#harvest), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #2b1f2d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Superhuman (https://brandsweets.com/colors/brands/superhuman-com), GitLab (https://brandsweets.com/colors/brands/gitlab), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/slateblue
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #2b1f2d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Alpine (https://brandsweets.com/palettes/cool#alpine), Gusto (https://brandsweets.com/colors/brands/gusto-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #2b1f2d in 18 real palettes, including Wikipedia's brand system and Google's brand system, as the accent. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 23 real palettes, including Sketch's brand system and Rolex's brand system put Blue beside #2b1f2d, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Rolex (https://brandsweets.com/colors/brands/rolex-com), Bumble (https://brandsweets.com/colors/brands/bumble-com), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 15.71:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.34:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #906996 (4.65:1); AA: background → #8a8a8a (4.55:1); AAA: text → #aa8db0 (7.15:1); AAA: background → #adadad (7:1)

## Curated palettes containing it

- **Golden Hour** (sunset, warm, vivid, light) — #f4a259, #f25f5c, #5b3758, #fff7ec, #2b1a2b — Apricot into coral into plum — a sunset flattened to three tokens, with the plum doubling as the twilight text colour. — tool: https://brandsweets.com/palettes/new/f4a259-f25f5c-5b3758-fff7ec-2b1a2b — collection: https://brandsweets.com/palettes/sunset

## 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/2b1f2d-bf9fc1-a4cb62-2d1f29-ece9f1?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: "#2b1f2d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.