# #545b83

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

## Values

- Hex: `#545b83`
- RGB: rgb(84, 91, 131)
- HSL: hsl(231, 22%, 42%)
- OKLCH: oklch(0.482 0.065 276.1)
- Relative luminance: 0.1101
- Nearest named color: Dusk (#4e5481, Δ 2.309) — https://brandsweets.com/colors/dusk
- Moods: cool, muted
- Page: https://brandsweets.com/colors/545b83

## Tints & shades

- Tints (toward white): #5f6895, #6d75a2, #7f86ad, #8f95b7, #a2a7c3, #b4b8cf, #c4c7d9, #d7d9e5, #e6e7ef, #f9f9fb
- Shades (toward black): #4c5276, #44496a, #3e4360, #363a54, #2e3248, #26293b, #1e202f, #181a25, #101119, #08090c

## Harmonies

- Complementary: #837c54
- Analogous: #547283, #645483
- Triadic: #83545b, #5b8354
- Split-complementary: #836454, #728354
- Tetradic: #835472, #837c54, #548364

## Colors that go with #545b83

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 #545b83: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Amazon (https://brandsweets.com/colors/brands/amazon-com), Campus (https://brandsweets.com/palettes/friendly#campus), Pampers (https://brandsweets.com/colors/brands/pampers-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #545b83 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #545b83's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Capital One (https://brandsweets.com/colors/brands/capitalone-com), Discover (https://brandsweets.com/colors/brands/discover-com), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Auth0 (https://brandsweets.com/colors/brands/auth0-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #545b83 in 5 real palettes, including McDonald's's brand system and Warner Bros.'s brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Activision's brand system and Tesco's brand system put Blue beside #545b83, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #545b83: 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), Unilever (https://brandsweets.com/colors/brands/unilever-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #545b83 in 15 real palettes, including Wells Fargo's brand system and Costco's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Costco (https://brandsweets.com/colors/brands/costco-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #545b83: 4 real palettes, including Venmo's brand system and Deep Water, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 6.56:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #50567c (7.09:1)
- On black (#000000): 3.2:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #6a72a0 (4.53:1); AA: background → #d6d6d6 (4.51:1); AAA: text → #8f95b7 (7.15:1)

## Curated palettes containing it

- **Dusk** (cool, muted, elegant) — #4b5d8a, #8b97b3, #c07a4e, #eef0f4, #1f2430 — Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals. — tool: https://brandsweets.com/palettes/new/4b5d8a-8b97b3-c07a4e-eef0f4-1f2430 — collection: https://brandsweets.com/palettes/cool

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/545b83-9c9ec4-df834e-231f2d-e9eef1?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: "#545b83" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.