# #51455f

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

## Values

- Hex: `#51455f`
- RGB: rgb(81, 69, 95)
- HSL: hsl(268, 16%, 32%)
- OKLCH: oklch(0.413 0.045 305.5)
- Relative luminance: 0.0683
- Nearest named color: Black Magic (#4f4554, Δ 1.941) — https://brandsweets.com/colors/black-magic
- Moods: cool, muted
- Page: https://brandsweets.com/colors/51455f

## Tints & shades

- Tints (toward white): #625473, #726085, #837198, #9383a5, #a597b4, #b7acc3, #c6bed0, #d8d3df, #e8e4ec, #faf9fb
- Shades (toward black): #493e56, #42384d, #3d3347, #352d3e, #2d2735, #26202c, #1e1a23, #19151e, #120f15, #0a090c

## Harmonies

- Complementary: #525f45
- Analogous: #45455f, #5e455f
- Triadic: #5f5145, #455f51
- Split-complementary: #5f5e45, #455f45
- Tetradic: #5f4545, #525f45, #455f5e

## Colors that go with #51455f

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

- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #51455f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/teal
- **Blue** #0000ff [pool] — 5 real palettes, including Jeep's brand system and Alaska Airlines's brand system put Blue beside #51455f, as the accent. Seen in: Jeep (https://brandsweets.com/colors/brands/jeep-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Darkroom and Bramble put Champagne beside #51455f, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), Bramble (https://brandsweets.com/palettes/muted#bramble), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #51455f: 4 real palettes, including Bramble and Desert Road, as the supporting colour. Seen in: Bramble (https://brandsweets.com/palettes/muted#bramble), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Dusk (https://brandsweets.com/palettes/cool#dusk), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #51455f in 7 real palettes, including Codecademy's brand system and Dunkin''s brand system, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #51455f: 10 real palettes, including HP's brand system and Hinge's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #51455f in 5 real palettes, including Disney's brand system and Fireside, as the accent. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Fireside (https://brandsweets.com/palettes/dark#fireside), Open House (https://brandsweets.com/palettes/clean#open-house), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/goldenrod
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #51455f: 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): 8.87:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.37:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #816e96 (4.6:1); AA: background → #bababa (4.57:1); AAA: text → #a092b0 (7.23:1); AAA: background → #e6e6e6 (7.11:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/51455f-b39cc4-dfdc4e-2c1f2d-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: "#51455f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.