# #42677b

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

## Values

- Hex: `#42677b`
- RGB: rgb(66, 103, 123)
- HSL: hsl(201, 30%, 37%)
- OKLCH: oklch(0.494 0.053 233)
- Relative luminance: 0.1229
- Nearest named color: Admiral Blue (#50647f, Δ 2.109) — https://brandsweets.com/colors/admiral-blue
- Moods: cool, muted
- Page: https://brandsweets.com/colors/42677b

## Tints & shades

- Tints (toward white): #4d788f, #5788a2, #6a97af, #7ea5b9, #95b5c6, #a9c3d1, #bdd1db, #d1dfe6, #e4ecf1, #f8fafb
- Shades (toward black): #3d5f71, #365363, #304b5a, #2b4350, #253a46, #1e2f38, #19272e, #141f24, #0c1317, #070b0d

## Harmonies

- Complementary: #7b5642
- Analogous: #427b72, #424b7b
- Triadic: #7b4267, #677b42
- Split-complementary: #7b424b, #7b7242
- Tetradic: #72427b, #7b5642, #4b7b42

## Colors that go with #42677b

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 for #42677b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Gusto (https://brandsweets.com/colors/brands/gusto-com), Pampers (https://brandsweets.com/colors/brands/pampers-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #42677b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #42677b in 5 real palettes, including Lemon Squeezy's brand system and McDonald's's brand system, as the lead colour. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 5 real palettes, including Activision's brand system and Warp's brand system put Blue beside #42677b, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Tesco (https://brandsweets.com/colors/brands/tesco-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/blue
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #42677b, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), 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 #42677b: 6 real palettes, including Fintech Trust and Ink & Paper, as the lead colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #42677b: 5 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), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #42677b in 16 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), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/crimson

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

- On white (#ffffff): 6.07:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #3b5c6d (7.15:1)
- On black (#000000): 3.46:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #4f7a92 (4.53:1); AA: background → #dedede (4.51:1); AAA: text → #709bb2 (7.02:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/42677b-9cb1c4-df4e62-1f222d-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: "#42677b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.