# #5b6871

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

## Values

- Hex: `#5b6871`
- RGB: rgb(91, 104, 113)
- HSL: hsl(205, 11%, 40%)
- OKLCH: oklch(0.51 0.021 238.1)
- Relative luminance: 0.1332
- Nearest named color: Alley Cat (#656874, Δ 1.589) — https://brandsweets.com/colors/alley-cat
- Moods: cool, muted
- Page: https://brandsweets.com/colors/5b6871

## Tints & shades

- Tints (toward white): #687782, #778792, #85939d, #96a2ab, #a7b1b9, #b8c0c6, #c9cfd4, #d7dcdf, #e8ebed, #f9fafa
- Shades (toward black): #525d66, #4b565d, #424b52, #3b444a, #32393e, #292f33, #22272a, #191d1f, #121517, #090a0b

## Harmonies

- Complementary: #71645b
- Analogous: #5b716f, #5b5d71
- Triadic: #715b68, #68715b
- Split-complementary: #715b5d, #716f5b
- Tetradic: #6f5b71, #71645b, #5d715b

## Colors that go with #5b6871

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black that reads cleanly against #5b6871 without the hard edge of pure #000. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Gusto (https://brandsweets.com/colors/brands/gusto-com), Harbour (https://brandsweets.com/palettes/cool#harbour), Stanley (https://brandsweets.com/colors/brands/stanley1913-com). — https://brandsweets.com/colors/charcoal
- **Champagne** #f7e7ce [pool] — 5 real palettes, including BrandSweets's brand system and Darkroom put Champagne beside #5b6871. Seen in: BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Darkroom (https://brandsweets.com/palettes/muted#darkroom), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/champagne
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #5b6871: 4 real palettes, including Ink & Paper and Fintech Trust, as the accent. Seen in: Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Intel (https://brandsweets.com/colors/brands/intel-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #5b6871: 6 real palettes, including Desert Road and Riverbed, as the lead colour. Seen in: Desert Road (https://brandsweets.com/palettes/warm#desert-road), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Dusk (https://brandsweets.com/palettes/cool#dusk), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #5b6871 in 8 real palettes, including Gemstone and Retro Pop, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Redfin (https://brandsweets.com/colors/brands/redfin-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #5b6871: 11 real palettes, including Campus and The New York Times's brand system, as the lead colour. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), HP (https://brandsweets.com/colors/brands/hp-com), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #5b6871: 5 real palettes, including Newsprint and Fireside, as the lead colour. Seen in: Newsprint (https://brandsweets.com/palettes/editorial#newsprint), Fireside (https://brandsweets.com/palettes/dark#fireside), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Honda (https://brandsweets.com/colors/brands/honda-com). — https://brandsweets.com/colors/firebrick
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #5b6871 in 5 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), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Fireside (https://brandsweets.com/palettes/dark#fireside). — https://brandsweets.com/colors/goldenrod

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

- On white (#ffffff): 5.73:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4d5860 (7.29:1)
- On black (#000000): 3.66:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #687782 (4.55:1); AA: background → #e6e6e6 (4.59:1); AAA: text → #8b98a2 (7.11:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/5b6871-9cafc4-df4e58-1f212d-e9f1f0?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: "#5b6871" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.