# #1d404e

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

## Values

- Hex: `#1d404e`
- RGB: rgb(29, 64, 78)
- HSL: hsl(197, 46%, 21%)
- OKLCH: oklch(0.352 0.047 226.6)
- Relative luminance: 0.0448
- Nearest named color: Cold and Dark (#154250, Δ 0.836) — https://brandsweets.com/colors/cold-and-dark
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/1d404e

## Tints & shades

- Tints (toward white): #28596c, #326e86, #3d87a4, #4c9dbd, #6aadc8, #84bcd2, #a2ccdd, #c0dce8, #daebf1, #f8fbfc
- Shades (toward black): #1a3a47, #193743, #16313c, #132b34, #122830, #0f2229, #0c1c22, #0a151a, #081216, #060c0f

## Harmonies

- Complementary: #4e2b1d
- Analogous: #1d4e44, #1d284e
- Triadic: #4e1d40, #404e1d
- Split-complementary: #4e1d28, #4e441d
- Tetradic: #441d4e, #4e2b1d, #284e1d

## Colors that go with #1d404e

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

- **Denim** #1560bd [harmony, pool: analogous] — Denim is #1d404e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: 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), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/denim
- **Teal** #008080 [harmony, pool: analogous] — Teal is #1d404e'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), N26 (https://brandsweets.com/colors/brands/n26-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century). — https://brandsweets.com/colors/teal
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #1d404e 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] — 12 real palettes, including Jeep's brand system and Alaska Airlines's brand system put Blue beside #1d404e, 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] — 5 real palettes, including Garden Wedding and Rain Garden put Blush Pink beside #1d404e, as the supporting colour. Seen in: Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Nursery (https://brandsweets.com/palettes/light#nursery), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/blush-pink
- **Burlywood** #deb887 [pool] — Burlywood is paired with #1d404e in 4 real palettes, including Polaroid and Coastal, as the accent. Seen in: Polaroid (https://brandsweets.com/palettes/light#polaroid), Coastal (https://brandsweets.com/palettes/cool#coastal), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Kiln (https://brandsweets.com/palettes/dark#kiln). — https://brandsweets.com/colors/burlywood
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #1d404e: 7 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 #1d404e: 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): 11.08:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.9:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #387d99 (4.56:1); AA: background → #a6a6a6 (4.55:1); AAA: text → #509fbe (7.04:1); AAA: background → #cfcfcf (7.11:1)

## Brands using this color

- **Codecademy** — primary #1c4454 (Δ 1.455) — https://brandsweets.com/colors/brands/codecademy-com
- **IHG** — accent #1f4456 (Δ 1.733) — https://brandsweets.com/colors/brands/ihg-com
- **Disney** — secondary #054553 (Δ 1.976) — https://brandsweets.com/colors/brands/disney-com

## 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/1d404e-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: "#1d404e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.