# #510b45

A color — warm, vivid, dark, playful, bold, luxury. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#510b45`
- RGB: rgb(81, 11, 69)
- HSL: hsl(310, 76%, 18%)
- OKLCH: oklch(0.305 0.12 336.4)
- Relative luminance: 0.0242
- Nearest named color: Velvet Cosmos (#441144, Δ 2.948) — https://brandsweets.com/colors/velvet-cosmos
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/510b45

## Tints & shades

- Tints (toward white): #751064, #991583, #bc1aa1, #e01fc0, #e543ca, #ea66d4, #ef8ade, #f4aee8, #f9d2f2, #fef6fc
- Shades (toward black): #4c0a41, #43093a, #3f0936, #36072e, #31072a, #2d0626, #24051f, #1f041b, #160313, #12020f

## Harmonies

- Complementary: #0b5117
- Analogous: #3a0b51, #510b22
- Triadic: #45510b, #0b4551
- Split-complementary: #22510b, #0b513a
- Tetradic: #513a0b, #0b5117, #0b2251

## Colors that go with #510b45

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

- **Crimson** #dc143c [harmony, pool: analogous] — Crimson is #510b45's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Burger King (https://brandsweets.com/colors/brands/bk-com), Lenovo (https://brandsweets.com/colors/brands/lenovo-com), M&M's (https://brandsweets.com/colors/brands/mms-com). — https://brandsweets.com/colors/crimson
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #510b45 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/seagreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #510b45: 5 real palettes, including Heinz's brand system and Hinge's brand system, as the accent. Seen in: Heinz (https://brandsweets.com/colors/brands/heinz-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Box (https://brandsweets.com/colors/brands/box-com), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/denim
- **Slate Gray** #708090 [pool] — 4 real palettes, including Bloomberg's brand system and Hermès's brand system put Slate Gray beside #510b45, as the accent. Seen in: Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com), PlayStation® Official Site: Consoles, Games, Accessories & MoreSony Interactive Entertainment (https://brandsweets.com/colors/brands/playstation-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/slategray
- **Blue** #0000ff [pool] — 3 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #510b45, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com). — https://brandsweets.com/colors/blue
- **Cream** #fffdd0 [role, pool] — Cream is the surface #510b45 wants: a warm off-white that shares its undertone, so #510b45 reads softer on it than on pure white. Seen in: MetaMask (https://brandsweets.com/colors/brands/metamask-io). — https://brandsweets.com/colors/cream
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #510b45: 3 real palettes, including Macaron and Sorbet, as the supporting colour. Seen in: Macaron (https://brandsweets.com/palettes/light#macaron), Sorbet (https://brandsweets.com/palettes/light#sorbet), Opera (https://brandsweets.com/colors/brands/opera-com). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #510b45 in 3 real palettes, including Rotten Tomatoes's brand system and Docker's brand system, as the supporting colour. Seen in: Rotten Tomatoes (https://brandsweets.com/colors/brands/rottentomatoes-com), Docker (https://brandsweets.com/colors/brands/docker-com), Loom (https://brandsweets.com/colors/brands/loom-com). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 14.15:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.48:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #d31db5 (4.61:1); AA: background → #949494 (4.67:1); AAA: text → #ea62d3 (7.19:1); AAA: background → #b8b8b8 (7.14:1)

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- playful: https://brandsweets.com/fonts/mood/playful
- bold: https://brandsweets.com/fonts/mood/bold
- luxury: https://brandsweets.com/fonts/mood/luxury

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/510b45-c19fb7-83cb62-2d1f25-efe9f1?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: "#510b45" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.