# #183e68

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

## Values

- Hex: `#183e68`
- RGB: rgb(24, 62, 104)
- HSL: hsl(212, 63%, 25%)
- OKLCH: oklch(0.36 0.085 253.2)
- Relative luminance: 0.0464
- Nearest named color: Aegean Blue (#1b416f, Δ 1.477) — https://brandsweets.com/colors/aegean-blue
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/183e68

## Tints & shades

- Tints (toward white): #1e4e85, #2662a6, #2c73c3, #4085d4, #619adb, #7eade2, #9bbfe8, #b8d2ef, #dae7f7, #f7fafd
- Shades (toward black): #163860, #143357, #122e4f, #102a47, #0e253e, #0b1d32, #09182a, #081421, #060f19, #040a11

## Harmonies

- Complementary: #684218
- Analogous: #186568, #1a1868
- Triadic: #68183d, #3d6818
- Split-complementary: #681a18, #656818
- Tetradic: #681865, #684218, #18681a

## Colors that go with #183e68

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: triadic] — Crimson completes a triad with #183e68 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/crimson
- **Teal** #008080 [harmony, pool: analogous] — Teal is #183e68'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), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Gusto (https://brandsweets.com/colors/brands/gusto-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/teal
- **Blue** #0000ff [pool] — 12 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #183e68, 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), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 4 real palettes, including Rain Garden and Garden Wedding put Blush Pink beside #183e68, as the accent. Seen in: Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Nursery (https://brandsweets.com/palettes/light#nursery), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/blush-pink
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #183e68: 5 real palettes, including Open House and Coastal, as the supporting colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Coastal (https://brandsweets.com/palettes/cool#coastal), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/cadetblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #183e68: 4 real palettes, including Lamborghini's brand system and Vimeo's brand system, as the supporting colour. Seen in: Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Astro (https://brandsweets.com/colors/brands/astro-build), Kraken (https://brandsweets.com/colors/brands/kraken-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #183e68: 22 real palettes, including Hasbro's brand system and Hinge's brand system, as the supporting colour. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #183e68: 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): 10.89:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.93:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #2e78cc (4.67:1); AA: background → #a8a8a8 (4.58:1); AAA: text → #619adb (7.15:1); AAA: background → #d1d1d1 (7.13:1)

## Brands using this color

- **Plaid** — accent #043c67 (Δ 1.51) — https://brandsweets.com/colors/brands/plaid-com
- **Alaska Airlines** — secondary #01426a (Δ 1.563) — https://brandsweets.com/colors/brands/alaskaair-com
- **Hasbro** — primary #003c69 (Δ 1.68) — https://brandsweets.com/colors/brands/hasbro-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/183e68-9caac4-df564e-1f202d-e9f1f1?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: "#183e68" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.