# #731a89

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

## Values

- Hex: `#731a89`
- RGB: rgb(115, 26, 137)
- HSL: hsl(288, 68%, 32%)
- OKLCH: oklch(0.419 0.179 318.5)
- Relative luminance: 0.0619
- Nearest named color: Ultraberry (#770088, Δ 2.13) — https://brandsweets.com/colors/ultraberry
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/731a89

## Tints & shades

- Tints (toward white): #8c20a7, #a225c1, #b731d8, #c04bdd, #ca69e2, #d587e8, #dea1ed, #e8bff3, #f1d8f8, #fcf6fd
- Shades (toward black): #68187c, #5d156f, #561467, #4b115a, #410f4d, #360c40, #2b0a33, #24082b, #19061e, #0e0311

## Harmonies

- Complementary: #30891a
- Analogous: #3b1a89, #891a68
- Triadic: #89731a, #1a8973
- Split-complementary: #68891a, #1a893b
- Tetradic: #893b1a, #30891a, #1a6889

## Colors that go with #731a89

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Forest Green** #228b22 [harmony: complementary] — Forest Green sits directly opposite #731a89 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/forestgreen
- **Blue Violet** #8a2be2 [harmony, pool: analogous] — Blue Violet is #731a89's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Taco Bell (https://brandsweets.com/colors/brands/tacobell-com), Twitch (https://brandsweets.com/colors/brands/twitch-tv). — https://brandsweets.com/colors/blueviolet
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #731a89: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #731a89 in 3 real palettes, including Lenovo's brand system and Wells Fargo's brand system, as the supporting colour. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #731a89: 3 real palettes, including Slack's brand system and Hinge's brand system, as the lead colour. Seen in: Slack (https://brandsweets.com/colors/brands/slack-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Peacock (https://brandsweets.com/palettes/vivid#peacock). — https://brandsweets.com/colors/denim
- **Tomato** #ff6347 [pool] — 3 real palettes, including FedEx's brand system and Golden Hour put Tomato beside #731a89, as the supporting colour. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), Golden Hour (https://brandsweets.com/palettes/warm#golden-hour), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/tomato
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #731a89 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #731a89: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/seagreen

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

- On white (#ffffff): 9.38:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.24:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #b836d9 (4.57:1); AA: background → #b5b5b5 (4.58:1); AAA: text → #cd72e4 (7.12:1); AAA: background → #e0e0e0 (7.11:1)

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/731a89-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: "#731a89" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.