# #3b6078

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

## Values

- Hex: `#3b6078`
- RGB: rgb(59, 96, 120)
- HSL: hsl(204, 34%, 35%)
- OKLCH: oklch(0.471 0.058 238.1)
- Relative luminance: 0.1065
- Nearest named color: Atlantis (#336172, Δ 1.458) — https://brandsweets.com/colors/atlantis
- Moods: cool, muted
- Page: https://brandsweets.com/colors/3b6078

## Tints & shades

- Tints (toward white): #45708c, #5183a4, #6292b2, #76a0bc, #8eb1c7, #a3bfd2, #b7cddc, #ccdbe6, #e4ecf2, #f8fafc
- Shades (toward black): #36576d, #314f63, #2c4759, #273f4f, #223644, #1b2c37, #16232c, #111b22, #0c1318, #070b0e

## Harmonies

- Complementary: #78533b
- Analogous: #3b7872, #3b4178
- Triadic: #783b5f, #5f783b
- Split-complementary: #783b41, #78723b
- Tetradic: #723b78, #78533b, #41783b

## Colors that go with #3b6078

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

- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #3b6078's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Stripe (https://brandsweets.com/colors/brands/stripe), GitHub (https://brandsweets.com/colors/brands/github), Subaru (https://brandsweets.com/colors/brands/subaru-com), Motorola (https://brandsweets.com/colors/brands/motorola-com). — https://brandsweets.com/colors/royalblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #3b6078 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 #3b6078 in 4 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Activision's brand system and Tesco's brand system put Blue beside #3b6078, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #3b6078: 4 real palettes, including Open House and Dusk, as the supporting colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Dusk (https://brandsweets.com/palettes/cool#dusk), Alpine (https://brandsweets.com/palettes/cool#alpine), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #3b6078: 5 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), Unilever (https://brandsweets.com/colors/brands/unilever-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #3b6078: 4 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), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Riverbed (https://brandsweets.com/palettes/muted#riverbed). — https://brandsweets.com/colors/copper
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #3b6078: 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): 6.71:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #395d74 (7.02:1)
- On black (#000000): 3.13:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #4c7b9a (4.61:1); AA: background → #d4d4d4 (4.53:1); AAA: text → #6f9bb8 (7.06:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3b6078-9cafc4-df4e5a-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: "#3b6078" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.