# #1d4454

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

## Values

- Hex: `#1d4454`
- RGB: rgb(29, 68, 84)
- HSL: hsl(197, 49%, 22%)
- OKLCH: oklch(0.366 0.052 227.6)
- Relative luminance: 0.0504
- Nearest named color: Cold and Dark (#154250, Δ 1.204) — https://brandsweets.com/colors/cold-and-dark
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/1d4454

## Tints & shades

- Tints (toward white): #275d72, #30728d, #3b8bab, #499fc1, #67afcb, #85bfd5, #a0cdde, #bedde9, #d9ebf2, #f7fbfc
- Shades (toward black): #1a3e4c, #173844, #163541, #142e39, #112831, #0e222a, #0c1c22, #0a191e, #081317, #050c0f

## Harmonies

- Complementary: #542c1d
- Analogous: #1d5448, #1d2954
- Triadic: #541d44, #44541d
- Split-complementary: #541d29, #54481d
- Tetradic: #481d54, #542c1d, #29541d

## Colors that go with #1d4454

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

- **Firebrick** #b22222 [harmony, pool: split] — Firebrick is a split-complement of #1d4454: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Fenty Beauty (https://brandsweets.com/colors/brands/fentybeauty-com), Vodafone (https://brandsweets.com/colors/brands/vodafone-com). — https://brandsweets.com/colors/firebrick
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #1d4454's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Zoom (https://brandsweets.com/colors/brands/zoom-us), Docker (https://brandsweets.com/colors/brands/docker-com), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: analogous] — Teal is #1d4454'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), Gusto (https://brandsweets.com/colors/brands/gusto-com), N26 (https://brandsweets.com/colors/brands/n26-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/teal
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #1d4454 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove). — https://brandsweets.com/colors/sienna
- **Blue** #0000ff [pool] — 11 real palettes, including Jeep's brand system and Alaska Airlines's brand system put Blue beside #1d4454, as the accent. Seen in: Jeep (https://brandsweets.com/colors/brands/jeep-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 4 real palettes, including Garden Wedding and Nursery put Blush Pink beside #1d4454, as the supporting colour. Seen in: Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Nursery (https://brandsweets.com/palettes/light#nursery), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/blush-pink
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #1d4454: 5 real palettes, including Paper & Pine and Coastal, as the supporting colour. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Coastal (https://brandsweets.com/palettes/cool#coastal), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/cadetblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #1d4454: 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): 10.46:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.01:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #357f9c (4.67:1); AA: background → #ababab (4.56:1); AAA: text → #499fc1 (7.01:1); AAA: background → #d4d4d4 (7.06:1)

## Brands using this color

- **Codecademy** — primary #1c4454 (Δ 0.091) — https://brandsweets.com/colors/brands/codecademy-com
- **IHG** — accent #1f4456 (Δ 0.425) — https://brandsweets.com/colors/brands/ihg-com
- **Disney** — secondary #054553 (Δ 1.53) — https://brandsweets.com/colors/brands/disney-com
- **Auth0** — secondary #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/auth0-com
- **Hinge** — secondary #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/hinge-co
- **Jack Daniel's** — secondary #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/jackdaniels-com
- **Lamborghini** — accent #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/lamborghini-com
- **Puma** — accent #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/puma-com
- **Stanley** — accent #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/stanley1913-com
- **Starlink** — primary #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/starlink-com
- **Zoom** — accent #27455c (Δ 1.844) — https://brandsweets.com/colors/brands/zoom-us

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold
- 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/1d4454-9cb4c4-df4e6b-1f232d-e9f1ef?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: "#1d4454" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.