# #43505b

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

## Values

- Hex: `#43505b`
- RGB: rgb(67, 80, 91)
- HSL: hsl(208, 15%, 31%)
- OKLCH: oklch(0.424 0.025 243.9)
- Relative luminance: 0.0769
- Nearest named color: Abyssal (#404c57, Δ 1.399) — https://brandsweets.com/colors/abyssal
- Moods: cool, muted
- Page: https://brandsweets.com/colors/43505b

## Tints & shades

- Tints (toward white): #52626f, #5f7181, #6f8395, #8495a4, #98a7b3, #aab6c0, #bec7cf, #d3d9de, #e5e8eb, #f9fafb
- Shades (toward black): #3d4852, #38434c, #323b43, #2b343b, #272e35, #21272c, #1a1f23, #14171a, #0f1215, #090a0c

## Harmonies

- Complementary: #5b4e43
- Analogous: #435b5a, #43445b
- Triadic: #5b4350, #505b43
- Split-complementary: #5b4344, #5b5a43
- Tetradic: #5a435b, #5b4e43, #445b43

## Colors that go with #43505b

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] — 8 real palettes, including Jeep's brand system and Alaska Airlines's brand system put Blue beside #43505b, 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), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #43505b: 4 real palettes, including Paper & Pine and Dusk, as the supporting colour. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #43505b, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #43505b: 5 real palettes, including Desert Road and Dusk, as the lead colour. Seen in: Desert Road (https://brandsweets.com/palettes/warm#desert-road), Dusk (https://brandsweets.com/palettes/cool#dusk), Notion (https://brandsweets.com/colors/brands/notion), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #43505b in 6 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), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #43505b: 8 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
- **Emerald Green** #50c878 [pool] — Emerald Green is paired with #43505b in 4 real palettes, including Neon's brand system and Docker's brand system, as the lead colour. Seen in: Neon (https://brandsweets.com/colors/brands/neon-tech), Docker (https://brandsweets.com/colors/brands/docker-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Chime (https://brandsweets.com/colors/brands/chime-com). — https://brandsweets.com/colors/emerald-green
- **White Smoke** #f5f5f5 [role] — White Smoke is the near-white surface #43505b was made for — maximum legibility with no colour cast to argue with. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 8.28:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.54:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #66798a (4.67:1); AA: background → #bfbfbf (4.5:1); AAA: text → #8797a6 (7.01:1); AAA: background → #ededed (7.07:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/43505b-9cadc4-df4e51-1f212d-e9f1f1?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: "#43505b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.