# #105b84

A color — cool, vivid, dark, technical, modern, luxury, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#105b84`
- RGB: rgb(16, 91, 132)
- HSL: hsl(201, 78%, 29%)
- OKLCH: oklch(0.449 0.095 239.5)
- Relative luminance: 0.0926
- Nearest named color: Beyond the Sea (#005784, Δ 1.45) — https://brandsweets.com/colors/beyond-the-sea
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/105b84

## Tints & shades

- Tints (toward white): #1471a3, #1887c3, #1c9de3, #3cabe7, #5cb9eb, #77c4ee, #97d2f2, #b6e0f6, #d6edfa, #f6fbfe
- Shades (toward black): #0f557b, #0d4c6d, #0c4564, #0b3c56, #0a354d, #082c40, #072636, #051c29, #041620, #020d12

## Harmonies

- Complementary: #843910
- Analogous: #108472, #102284
- Triadic: #84105b, #5b8410
- Split-complementary: #841022, #847210
- Tetradic: #721084, #843910, #228410

## Colors that go with #105b84

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

- **Crimson** #dc143c [harmony, pool: split] — Crimson is a split-complement of #105b84: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Costco (https://brandsweets.com/colors/brands/costco-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #105b84's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Motorola (https://brandsweets.com/colors/brands/motorola-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Stripe (https://brandsweets.com/colors/brands/stripe), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/royalblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #105b84 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). — https://brandsweets.com/colors/sienna
- **Blue** #0000ff [pool] — 7 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #105b84, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Activision (https://brandsweets.com/colors/brands/activision-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #105b84: 6 real palettes, including Wendy's's brand system and Fireside, as the supporting colour. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com), Fireside (https://brandsweets.com/palettes/dark#fireside), AT&T (https://brandsweets.com/colors/brands/att-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com). — https://brandsweets.com/colors/firebrick
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #105b84 in 5 real palettes, including Open House and Sapphire & Gold, as the accent. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Fireside (https://brandsweets.com/palettes/dark#fireside). — https://brandsweets.com/colors/goldenrod
- **Midnight Blue** #191970 [pool] — 17 real palettes, including FIFA's brand system and Open House put Midnight Blue beside #105b84, as the lead colour. Seen in: FIFA (https://brandsweets.com/colors/brands/fifa-com), Open House (https://brandsweets.com/palettes/clean#open-house), First Snow (https://brandsweets.com/palettes/cool#first-snow), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/midnightblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #105b84: 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): 7.36:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.85:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #167bb1 (4.5:1); AA: background → #cccccc (4.59:1); AAA: text → #219fe4 (7.14:1); AAA: background → #fafafa (7.06:1)

## Brands using this color

- **Capital One** — secondary #255f82 (Δ 1.954) — https://brandsweets.com/colors/brands/capitalone-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/105b84-9cb1c4-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: "#105b84" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.