# #291f41

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

## Values

- Hex: `#291f41`
- RGB: rgb(41, 31, 65)
- HSL: hsl(258, 35%, 19%)
- OKLCH: oklch(0.269 0.062 295.5)
- Relative luminance: 0.0183
- Nearest named color: Midnight Velvet (#2a2243, Δ 0.969) — https://brandsweets.com/colors/midnight-velvet
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/291f41

## Tints & shades

- Tints (toward white): #3b2d5d, #4d3a78, #5e4794, #7156ae, #8872bb, #9c8ac7, #b3a5d4, #cbc1e1, #e2ddee, #f9f8fc
- Shades (toward black): #271e3e, #231b37, #211934, #1d162d, #1a1429, #161122, #140f1f, #0f0c18, #0d0a15, #09070e

## Harmonies

- Complementary: #37411f
- Analogous: #1f2641, #3b1f41
- Triadic: #412a1f, #1f412a
- Split-complementary: #413b1f, #26411f
- Tetradic: #411f26, #37411f, #1f413b

## Colors that go with #291f41

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 #291f41: softer than #000 and cool enough to feel like part of the same palette. Seen in: Volkswagen (https://brandsweets.com/colors/brands/vw-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: complementary] — Dark Olive Green sits directly opposite #291f41 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. 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), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/darkolivegreen
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #291f41: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Asana (https://brandsweets.com/colors/brands/asana-com), Wellness (https://brandsweets.com/palettes/warm#wellness), Mushroom (https://brandsweets.com/palettes/neutral#mushroom). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: triadic] — Sienna completes a triad with #291f41 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/sienna
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #291f41's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Discover (https://brandsweets.com/colors/brands/discover-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #291f41 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Clinic (https://brandsweets.com/palettes/clean#clinic). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #291f41 in 18 real palettes, including Southwest Airlines's brand system and Beach Hut, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 22 real palettes, including Sketch's brand system and Monzo's brand system put Blue beside #291f41, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 15.37:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.37:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7f68b6 (4.56:1); AA: background → #8c8c8c (4.57:1); AAA: text → #9f8dc8 (7.12:1); AAA: background → #b0b0b0 (7.09:1)

## Brands using this color

- **Sketch** — primary #2c203b (Δ 1.386) — https://brandsweets.com/colors/brands/sketch-com
- **Discover** — primary #23233f (Δ 1.686) — https://brandsweets.com/colors/brands/discover-com

## Curated palettes containing it

- **Lavender Haze** (playful, cool, light) — #8b5cf6, #c4b5fd, #f472b6, #faf7ff, #2e1f47 — Violet and pink on lilac-white: Gen-Z friendly, while the deep plum text keeps it legible. — tool: https://brandsweets.com/palettes/new/8b5cf6-c4b5fd-f472b6-faf7ff-2e1f47 — collection: https://brandsweets.com/palettes/playful

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/291f41-ad9cc4-dfc44e-291f2d-e9ebf1?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: "#291f41" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.