# #555d68

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

## Values

- Hex: `#555d68`
- RGB: rgb(85, 93, 104)
- HSL: hsl(215, 10%, 37%)
- OKLCH: oklch(0.475 0.02 256.4)
- Relative luminance: 0.1076
- Nearest named color: Blindfolded (#5a5e61, Δ 1.443) — https://brandsweets.com/colors/blindfolded
- Moods: cool, muted
- Page: https://brandsweets.com/colors/555d68

## Tints & shades

- Tints (toward white): #636c79, #707b89, #818a98, #929aa5, #a5acb6, #b6bcc3, #c7cbd1, #d8dbdf, #e9eaed, #f9fafa
- Shades (toward black): #4e555f, #454b54, #3e444c, #373c43, #30353b, #272b30, #202327, #191c1f, #101214, #090a0b

## Harmonies

- Complementary: #686055
- Analogous: #556668, #565568
- Triadic: #68555d, #5d6855
- Split-complementary: #685655, #666855
- Tetradic: #685566, #686055, #556856

## Colors that go with #555d68

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 #555d68: 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 #555d68, 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 #555d68: 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), 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 #555d68 in 7 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
- **Dark Goldenrod** #b8860b [pool] — 4 real palettes, including Cider and Greige put Dark Goldenrod beside #555d68, as the supporting colour. Seen in: Cider (https://brandsweets.com/palettes/warm#cider), Greige (https://brandsweets.com/palettes/neutral#greige), Puma (https://brandsweets.com/colors/brands/puma-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/darkgoldenrod
- **Denim** #1560bd [pool] — Designers have shipped Denim with #555d68: 7 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 #555d68: 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), Trader Joe's (https://brandsweets.com/colors/brands/traderjoes-com). — https://brandsweets.com/colors/firebrick
- **White Smoke** #f5f5f5 [role] — White Smoke is the near-white surface #555d68 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): 6.66:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #505862 (7.21:1)
- On black (#000000): 3.15:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #6c7684 (4.56:1); AA: background → #d6d6d6 (4.58:1); AAA: text → #8f97a3 (7.12:1)

## Brands using this color

- **GitHub** — textMuted #57606a (Δ 0.97) — https://brandsweets.com/colors/brands/github

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/555d68-9ca8c4-df5d4e-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: "#555d68" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.