# #31013d

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

## Values

- Hex: `#31013d`
- RGB: rgb(49, 1, 61)
- HSL: hsl(288, 97%, 12%)
- OKLCH: oklch(0.231 0.11 318.3)
- Relative luminance: 0.0101
- Nearest named color: Dark Purple (#35063e, Δ 1.527) — https://brandsweets.com/colors/dark-purple
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/31013d

## Tints & shades

- Tints (toward white): #550269, #750292, #9903bf, #ba04e7, #cf1dfc, #d94afc, #e172fd, #eba0fe, #f3c8fe, #fdf5ff
- Shades (toward black): #2c0137, #280132, #280132, #24012d, #200128, #1c0123, #18001e, #18001e, #140019, #100014

## Harmonies

- Complementary: #0d3c01
- Analogous: #13013c, #3c012a
- Triadic: #3c3001, #013c30
- Split-complementary: #2a3c01, #013c13
- Tetradic: #3c1301, #0d3c01, #012a3c

## Colors that go with #31013d

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 #31013d: softer than #000 and cool enough to feel like part of the same palette. Seen in: Volkswagen (https://brandsweets.com/colors/brands/vw-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Asana (https://brandsweets.com/colors/brands/asana-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #31013d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Subaru (https://brandsweets.com/colors/brands/subaru-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: triadic] — Sienna completes a triad with #31013d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), 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
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #31013d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Clinic (https://brandsweets.com/palettes/clean#clinic), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/teal
- **Forest Green** #228b22 [harmony, pool: complementary] — Forest Green sits directly opposite #31013d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Acer (https://brandsweets.com/colors/brands/acer-com). — https://brandsweets.com/colors/forestgreen
- **Amber** #ffbf00 [pool] — Amber is paired with #31013d in 8 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Google (https://brandsweets.com/colors/brands/google-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including Sketch's brand system and Penpot's brand system put Blue beside #31013d, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), Warp (https://brandsweets.com/colors/brands/warp-dev), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [harmony, pool: analogous] — Blue Violet is #31013d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Yahoo (https://brandsweets.com/colors/brands/yahoo-com), ClickUp (https://brandsweets.com/colors/brands/clickup-com). — https://brandsweets.com/colors/blueviolet

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

- On white (#ffffff): 17.47:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.2:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #c204f1 (4.58:1); AA: background → #828282 (4.55:1); AAA: text → #dd5efd (7.09:1); AAA: background → #a6a6a6 (7.17:1)

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- 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/31013d-be9fc1-aacb62-2d1f2a-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: "#31013d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.