# #555e6d

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

## Values

- Hex: `#555e6d`
- RGB: rgb(85, 94, 109)
- HSL: hsl(218, 12%, 38%)
- OKLCH: oklch(0.48 0.027 260.7)
- Relative luminance: 0.1104
- Nearest named color: Concrete Landscape (#5c606e, Δ 1.269) — https://brandsweets.com/colors/concrete-landscape
- Moods: cool, muted
- Page: https://brandsweets.com/colors/555e6d

## Tints & shades

- Tints (toward white): #636d7e, #707b8f, #818b9c, #929baa, #a4abb7, #b5bbc5, #c6cad2, #d7dae0, #e8eaed, #f9fafb
- Shades (toward black): #4f5664, #464d59, #3f4550, #363b45, #2f343c, #282c33, #1f2328, #191b1f, #101114, #090a0b

## Harmonies

- Complementary: #6d6455
- Analogous: #55696d, #58556d
- Triadic: #6d555e, #5e6d55
- Split-complementary: #6d5855, #696d55
- Tetradic: #6d5569, #6d6455, #556d58

## Colors that go with #555e6d

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

- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #555e6d: 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), Alpine (https://brandsweets.com/palettes/cool#alpine), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 5 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #555e6d, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #555e6d: 4 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), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Riverbed (https://brandsweets.com/palettes/muted#riverbed). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #555e6d in 9 real palettes, including Codecademy's brand system and Gemstone, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #555e6d: 10 real palettes, including HP's brand system and The New York Times's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Campus (https://brandsweets.com/palettes/friendly#campus), Dutch Bros (https://brandsweets.com/colors/brands/dutchbros-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #555e6d: 4 real palettes, including Fireside and Newsprint, as the lead colour. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Newsprint (https://brandsweets.com/palettes/editorial#newsprint), Wendy's (https://brandsweets.com/colors/brands/wendys-com), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/firebrick
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #555e6d in 4 real palettes, including Mid-Century and Open House, as the accent. Seen in: Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Open House (https://brandsweets.com/palettes/clean#open-house), Fireside (https://brandsweets.com/palettes/dark#fireside), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/goldenrod
- **White Smoke** #f5f5f5 [role] — White Smoke is the near-white surface #555e6d 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): 6.55:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #515967 (7.06:1)
- On black (#000000): 3.21:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #6c7689 (4.59:1); AA: background → #d6d6d6 (4.5:1); AAA: text → #8d96a5 (7.04:1)

## Brands using this color

- **GitHub** — textMuted #57606a (Δ 0.958) — https://brandsweets.com/colors/brands/github

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/555e6d-9ca6c4-df644e-201f2d-e9f0f1?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: "#555e6d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.