# #3d4e66

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

## Values

- Hex: `#3d4e66`
- RGB: rgb(61, 78, 102)
- HSL: hsl(215, 25%, 32%)
- OKLCH: oklch(0.42 0.046 257)
- Relative luminance: 0.074
- Nearest named color: Bluedgeons (#324c64, Δ 1.681) — https://brandsweets.com/colors/bluedgeons
- Moods: cool, muted
- Page: https://brandsweets.com/colors/3d4e66

## Tints & shades

- Tints (toward white): #4b5f7c, #566e8f, #6680a3, #798faf, #8fa2bc, #a6b5c9, #b9c5d5, #cfd7e2, #e2e7ee, #f9fafb
- Shades (toward black): #37475c, #324053, #2e3b4d, #283343, #222c39, #1d2530, #171d26, #131820, #0d1116, #080a0d

## Harmonies

- Complementary: #66553d
- Analogous: #3d6366, #413d66
- Triadic: #663d4e, #4e663d
- Split-complementary: #66413d, #63663d
- Tetradic: #663d63, #66553d, #3d6641

## Colors that go with #3d4e66

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

- **Teal** #008080 [harmony, pool: analogous] — Teal is #3d4e66's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/teal
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #3d4e66 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
- **Blue** #0000ff [pool] — 7 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #3d4e66, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #3d4e66: 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), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Darkroom and Sweetgreen's brand system put Champagne beside #3d4e66, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #3d4e66: 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), Notion (https://brandsweets.com/colors/brands/notion), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #3d4e66 in 8 real palettes, including Codecademy's brand system and Walgreens's brand system, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #3d4e66: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 8.47:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.48:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5e789c (4.64:1); AA: background → #bdbdbd (4.51:1); AAA: text → #8397b4 (7.05:1); AAA: background → #ebebeb (7.1:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3d4e66-9ca8c4-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: "#3d4e66" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.