# #3f172e

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

## Values

- Hex: `#3f172e`
- RGB: rgb(63, 23, 46)
- HSL: hsl(326, 47%, 17%)
- OKLCH: oklch(0.274 0.07 347.1)
- Relative luminance: 0.0187
- Nearest named color: Blackberry (#43182f, Δ 0.992) — https://brandsweets.com/colors/blackberry
- Moods: warm, dark, luxury, bold
- Page: https://brandsweets.com/colors/3f172e

## Tints & shades

- Tints (toward white): #5e2244, #7c2d59, #9a376f, #b84285, #c6629b, #d180ae, #dc9ec1, #e7bcd4, #f1dae7, #fcf8fa
- Shades (toward black): #3c162b, #341326, #311223, #2d1021, #290f1e, #220c18, #1e0b16, #1a0913, #13070e, #0f050b

## Harmonies

- Complementary: #174029
- Analogous: #3d1740, #40171a
- Triadic: #2e4017, #172e40
- Split-complementary: #1a4017, #17403d
- Tetradic: #403d17, #174029, #171a40

## Colors that go with #3f172e

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 #3f172e: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Squarespace (https://brandsweets.com/colors/brands/squarespace-com), 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). — https://brandsweets.com/colors/charcoal
- **Rust** #b7410e [harmony, pool: analogous] — Rust is #3f172e'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), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Gallery (https://brandsweets.com/palettes/editorial#gallery). — https://brandsweets.com/colors/rust
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #3f172e: 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
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #3f172e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Saffron (https://brandsweets.com/palettes/warm#saffron), Alpine (https://brandsweets.com/palettes/cool#alpine), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #3f172e in 18 real palettes, including McDonald's's brand system and Wikipedia's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com), Maple (https://brandsweets.com/palettes/warm#maple). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 19 real palettes, including Tim Hortons's brand system and Sketch's brand system put Blue beside #3f172e, as the accent. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Headspace (https://brandsweets.com/colors/brands/headspace-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #3f172e in 5 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
- **Blush Pink** #e8b4b8 [pool] — 6 real palettes, including Blush and Graphite Mono put Blush Pink beside #3f172e, as the supporting colour. Seen in: Blush (https://brandsweets.com/palettes/light#blush), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding). — https://brandsweets.com/colors/blush-pink

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

- On white (#ffffff): 15.29:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.37:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #be4b8c (4.57:1); AA: background → #8c8c8c (4.55:1); AAA: text → #d07cab (7.15:1); AAA: background → #b0b0b0 (7.05:1)

## 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/3f172e-c19fae-67cb62-2d1f21-f1e9f1?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: "#3f172e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.