# #43486b

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

## Values

- Hex: `#43486b`
- RGB: rgb(67, 72, 107)
- HSL: hsl(233, 23%, 34%)
- OKLCH: oklch(0.413 0.059 277.3)
- Relative luminance: 0.0689
- Nearest named color: Bonne Nuit (#3a4866, Δ 1.637) — https://brandsweets.com/colors/bonne-nuit
- Moods: cool, muted
- Page: https://brandsweets.com/colors/43486b

## Tints & shades

- Tints (toward white): #4f547d, #5c6393, #6c72a3, #8287b0, #9499bc, #a7abc8, #bdc0d6, #d0d2e2, #e6e7ef, #f9f9fb
- Shades (toward black): #3d4161, #373b58, #31354e, #2b2e45, #25283c, #1f2232, #1a1b29, #14151f, #0e0f16, #08080d

## Harmonies

- Complementary: #6b6643
- Analogous: #435b6b, #52436b
- Triadic: #6b4347, #476b43
- Split-complementary: #6b5243, #5b6b43
- Tetradic: #6b435b, #6b6643, #436b52

## Colors that go with #43486b

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

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #43486b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Capital One (https://brandsweets.com/colors/brands/capitalone-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 6 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #43486b, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #43486b: 4 real palettes, including Dusk and Open House, as the supporting colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Darkroom and Bramble put Champagne beside #43486b, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), Bramble (https://brandsweets.com/palettes/muted#bramble), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #43486b: 4 real palettes, including Dusk and Desert Road, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Bramble (https://brandsweets.com/palettes/muted#bramble), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #43486b in 9 real palettes, including Codecademy's brand system and Walgreens's brand system, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-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 #43486b: 14 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
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #43486b: 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): 8.83:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.38:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6c72a3 (4.57:1); AA: background → #bababa (4.55:1); AAA: text → #8e93b8 (7.02:1); AAA: background → #e6e6e6 (7.08:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/43486b-9c9cc4-df884e-241f2d-e9eef1?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: "#43486b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.