# #511178

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

## Values

- Hex: `#511178`
- RGB: rgb(81, 17, 120)
- HSL: hsl(277, 75%, 27%)
- OKLCH: oklch(0.348 0.16 307.8)
- Relative luminance: 0.0351
- Nearest named color: indigo (#4b0082, Δ 2.793) — https://brandsweets.com/colors/indigo
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/511178

## Tints & shades

- Tints (toward white): #661698, #7b1ab7, #901fd6, #a036e2, #b15ae7, #c079ec, #cf98f0, #ddb8f5, #ecd7f9, #fbf6fe
- Shades (toward black): #4b1070, #420e62, #3c0d59, #360b50, #300a47, #27083a, #210731, #1b0628, #12041b, #0c0312

## Harmonies

- Complementary: #397811
- Analogous: #1d1178, #78116c
- Triadic: #785111, #117851
- Split-complementary: #6c7811, #11781d
- Tetradic: #781d11, #397811, #116c78

## Colors that go with #511178

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 dbt Labs's brand system put Tomato beside #511178, 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), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com). — https://brandsweets.com/colors/tomato
- **Olive Drab** #6b8e23 [harmony: complementary] — Olive Drab sits directly opposite #511178 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/olivedrab
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #511178: softer than #000 and cool enough to feel like part of the same palette. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #511178 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
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #511178's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Discord (https://brandsweets.com/colors/brands/discord), Wayfair (https://brandsweets.com/colors/brands/wayfair-com). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #511178 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/teal
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #511178: 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 #511178: 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): 12.34:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.7:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #a744e4 (4.59:1); AA: background → #9e9e9e (4.61:1); AAA: text → #c079ec (7.19:1); AAA: background → #c4c4c4 (7.08:1)

## 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/511178-b99cc4-bdcb62-2d1f2c-eae9f1?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: "#511178" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.