# #540571

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

## Values

- Hex: `#540571`
- RGB: rgb(84, 5, 113)
- HSL: hsl(284, 92%, 23%)
- OKLCH: oklch(0.339 0.163 313.4)
- Relative luminance: 0.0319
- Nearest named color: indigo (#4b0082, Δ 3.828) — https://brandsweets.com/colors/indigo
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/540571

## Tints & shades

- Tints (toward white): #710698, #8b08ba, #a809e1, #bb19f5, #c640f7, #d062f8, #dc89fa, #e6acfc, #f2d3fd, #fcf5ff
- Shades (toward black): #4d0467, #45045d, #3e0353, #370349, #330345, #2c023b, #240231, #1d0227, #16011d, #0f0114

## Harmonies

- Complementary: #217105
- Analogous: #1e0571, #710557
- Triadic: #715405, #057154
- Split-complementary: #577105, #05711e
- Tetradic: #711e05, #217105, #055771

## Colors that go with #540571

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 #540571 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 #540571: 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
- **Tomato** #ff6347 [pool] — 3 real palettes, including FedEx's brand system and dbt Labs's brand system put Tomato beside #540571, as the supporting colour. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Golden Hour (https://brandsweets.com/palettes/warm#golden-hour). — https://brandsweets.com/colors/tomato
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #540571: 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 #540571: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/olive
- **Crimson** #dc143c [pool] — Crimson is paired with #540571 in two real palettes: 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). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #540571: two real palettes: 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). — https://brandsweets.com/colors/denim
- **Mauve** #e0b0ff [pool] — Mauve shows up next to #540571 in two real palettes: Ledger's brand system and Lavender Haze, as the accent. Seen in: Ledger (https://brandsweets.com/colors/brands/ledger-com), Lavender Haze (https://brandsweets.com/palettes/playful#lavender-haze). — https://brandsweets.com/colors/mauve

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

- On white (#ffffff): 12.83:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.64:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #bb19f5 (4.57:1); AA: background → #999999 (4.5:1); AAA: text → #d267f9 (7.05:1); AAA: background → #c2c2c2 (7.2:1)

## 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/540571-bc9fc1-b1cb62-2d1f2b-ebe9f1?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: "#540571" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.