# #540f67

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

## Values

- Hex: `#540f67`
- RGB: rgb(84, 15, 103)
- HSL: hsl(287, 75%, 23%)
- OKLCH: oklch(0.337 0.147 317.4)
- Relative luminance: 0.0321
- Nearest named color: Cosmic Explorer (#551155, Δ 3.251) — https://brandsweets.com/colors/cosmic-explorer
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/540f67

## Tints & shades

- Tints (toward white): #71148a, #8a18aa, #a71dcd, #ba2de1, #c651e6, #d070eb, #dc94f0, #e6b3f4, #f2d7f9, #fcf6fe
- Shades (toward black): #4c0d5e, #450c55, #3e0b4c, #370a43, #33093e, #2c0836, #24062d, #1d0524, #16041b, #0f0312

## Harmonies

- Complementary: #22670f
- Analogous: #280f67, #670f4e
- Triadic: #67540f, #0f6754
- Split-complementary: #4e670f, #0f6728
- Tetradic: #67280f, #22670f, #0f4e67

## Colors that go with #540f67

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

- **Tomato** #ff6347 [pool] — 4 real palettes, including FedEx's brand system and Golden Hour put Tomato beside #540f67, 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), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com). — https://brandsweets.com/colors/tomato
- **Forest Green** #228b22 [harmony: complementary] — Forest Green sits directly opposite #540f67 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
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #540f67: 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 #540f67 in 3 real palettes, including Lenovo's brand system and Casper Sleep's brand system, as the supporting colour. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #540f67: 3 real palettes, including Hinge's brand system and Slack's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Slack (https://brandsweets.com/colors/brands/slack-com), Heinz (https://brandsweets.com/colors/brands/heinz-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 3 real palettes, including Visa's brand system and Gillette's brand system put Midnight Blue beside #540f67, as the lead colour. Seen in: Visa (https://brandsweets.com/colors/brands/visa-com), Gillette (https://brandsweets.com/colors/brands/gillette-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/midnightblue
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #540f67: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/seagreen
- **Olive Green** #808000 [harmony: split] — Olive Green is a split-complement of #540f67: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/olive

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

- On white (#ffffff): 12.8:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.64:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #ba2de1 (4.55:1); AA: background → #9c9c9c (4.66:1); AAA: text → #d070eb (7.2:1); AAA: background → #c2c2c2 (7.18:1)

## 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/540f67-bd9fc1-abcb62-2d1f2a-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: "#540f67" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.