# #513d71

A color — cool, muted. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#513d71`
- RGB: rgb(81, 61, 113)
- HSL: hsl(263, 30%, 34%)
- OKLCH: oklch(0.406 0.087 300.3)
- Relative luminance: 0.0628
- Nearest named color: Drifting Violet (#5b4276, Δ 2.46) — https://brandsweets.com/colors/drifting-violet
- Moods: cool, muted
- Page: https://brandsweets.com/colors/513d71

## Tints & shades

- Tints (toward white): #5f4785, #6f549c, #7f63ab, #927ab8, #a28ec2, #b3a2cd, #c6b9da, #d6cde4, #e9e4f1, #faf8fb
- Shades (toward black): #4a3767, #42325d, #3b2d53, #342749, #2d223f, #261d35, #1f172b, #181221, #110c17, #09070d

## Harmonies

- Complementary: #5d713d
- Analogous: #3d4371, #6b3d71
- Triadic: #71513d, #3d7151
- Split-complementary: #716b3d, #43713d
- Tetradic: #713d43, #5d713d, #3d716b

## Colors that go with #513d71

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

- **Blue** #0000ff [pool] — 5 real palettes, including Alaska Airlines's brand system and CVS's brand system put Blue beside #513d71, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Jeep (https://brandsweets.com/colors/brands/jeep-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #513d71 in 8 real palettes, including Wells Fargo's brand system and Codecademy's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #513d71: 10 real palettes, including Hinge's brand system and HP's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), HP (https://brandsweets.com/colors/brands/hp-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 10 real palettes, including Microsoft's brand system and First Snow put Midnight Blue beside #513d71, as the accent. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), Plaid (https://brandsweets.com/colors/brands/plaid-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #513d71 in 5 real palettes, including Tumblr's brand system and NASA's brand system, as the accent. Seen in: Tumblr (https://brandsweets.com/colors/brands/tumblr-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Tide (https://brandsweets.com/colors/brands/tide-com), Audi (https://brandsweets.com/colors/brands/audi-com). — https://brandsweets.com/colors/orangered
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #513d71: 6 real palettes, including First Snow and Macaron, as the accent. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/powderblue
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #513d71: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Asana (https://brandsweets.com/colors/brands/asana-com), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/seagreen
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #513d71: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 9.31:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.26:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #846aaf (4.66:1); AA: background → #b5b5b5 (4.54:1); AAA: text → #a28ec2 (7.18:1); AAA: background → #e0e0e0 (7.05:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/513d71-b09cc4-dfd04e-2b1f2d-e9eaf1?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: "#513d71" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.