# #406f91

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

## Values

- Hex: `#406f91`
- RGB: rgb(64, 111, 145)
- HSL: hsl(205, 39%, 41%)
- OKLCH: oklch(0.523 0.075 241.6)
- Relative luminance: 0.145
- Nearest named color: Harbour Blue (#417491, Δ 1.535) — https://brandsweets.com/colors/harbour-blue
- Moods: cool, modern
- Page: https://brandsweets.com/colors/406f91

## Tints & shades

- Tints (toward white): #4980a7, #558db4, #6a9bbe, #7fa9c7, #95b7d0, #a6c3d8, #bcd2e1, #d1e0eb, #e3ecf3, #f8fafc
- Shades (toward black): #3a6483, #355c79, #2f516a, #28475c, #243e52, #1e3443, #172935, #111e27, #0c161c, #060b0e

## Harmonies

- Complementary: #916240
- Analogous: #40918b, #404791
- Triadic: #91406f, #6f9140
- Split-complementary: #914047, #918b40
- Tetradic: #8b4091, #916240, #479140

## Colors that go with #406f91

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 #406f91: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Amazon (https://brandsweets.com/colors/brands/amazon-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Harbour (https://brandsweets.com/palettes/cool#harbour). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #406f91'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), Slate Workspace (https://brandsweets.com/palettes/minimal#slate-workspace), GitHub (https://brandsweets.com/colors/brands/github), Motorola (https://brandsweets.com/colors/brands/motorola-com). — https://brandsweets.com/colors/royalblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #406f91 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dyson (https://brandsweets.com/colors/brands/dyson-com), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #406f91 in 8 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] — 4 real palettes, including Activision's brand system and Pixar's brand system put Blue beside #406f91, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #406f91: 7 real palettes, including Fintech Trust and Glacier, as the lead colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #406f91: 5 real palettes, including Dusk and Riverbed, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #406f91 in 16 real palettes, including Retro Pop and Wendy's's brand system, as the lead colour. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wendy's (https://brandsweets.com/colors/brands/wendys-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/crimson

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

- On white (#ffffff): 5.38:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #355c79 (7.1:1)
- On black (#000000): 3.9:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #467aa0 (4.55:1); AA: background → #ebebeb (4.52:1); AAA: text → #6a9bbe (7.04:1)

## Fonts for this mood

- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/406f91-9cafc4-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: "#406f91" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.