# #1e4d57

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

## Values

- Hex: `#1e4d57`
- RGB: rgb(30, 77, 87)
- HSL: hsl(191, 49%, 23%)
- OKLCH: oklch(0.392 0.053 213.9)
- Relative luminance: 0.0627
- Nearest named color: Raging Thunderstorm (#004f63, Δ 2.262) — https://brandsweets.com/colors/raging-thunderstorm
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/1e4d57

## Tints & shades

- Tints (toward white): #286876, #317f90, #3c9aaf, #4cacc2, #6bbacc, #85c7d5, #a4d5e0, #bee1e9, #ddeff3, #f7fbfc
- Shades (toward black): #1b4650, #193f48, #163941, #143239, #122f35, #10282e, #0d2126, #0a1b1e, #081417, #050d0f

## Harmonies

- Complementary: #57281e
- Analogous: #1e5745, #1e3057
- Triadic: #571e4d, #4d571e
- Split-complementary: #571e30, #57451e
- Tetradic: #451e57, #57281e, #30571e

## Colors that go with #1e4d57

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

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #1e4d57's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Capital One (https://brandsweets.com/colors/brands/capitalone-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: analogous] — Teal is #1e4d57's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Gusto (https://brandsweets.com/colors/brands/gusto-com), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), N26 (https://brandsweets.com/colors/brands/n26-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/teal
- **Rust** #b7410e [harmony, pool: complementary] — Rust sits directly opposite #1e4d57 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: IHG (https://brandsweets.com/colors/brands/ihg-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead). — https://brandsweets.com/colors/rust
- **Blue** #0000ff [pool] — 9 real palettes, including Jeep's brand system and Alaska Airlines's brand system put Blue beside #1e4d57, as the accent. Seen in: Jeep (https://brandsweets.com/colors/brands/jeep-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Instacart (https://brandsweets.com/colors/brands/instacart-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 4 real palettes, including Nursery and Garden Wedding put Blush Pink beside #1e4d57, as the lead colour. Seen in: Nursery (https://brandsweets.com/palettes/light#nursery), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), 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 #1e4d57: 5 real palettes, including Paper & Pine and Clean Beauty, as the supporting colour. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/cadetblue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #1e4d57: 4 real palettes, including Desert Road and Notion's brand system, as the lead colour. Seen in: Desert Road (https://brandsweets.com/palettes/warm#desert-road), Notion (https://brandsweets.com/colors/brands/notion), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/copper
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #1e4d57: 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): 9.32:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.25:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #317f90 (4.57:1); AA: background → #b5b5b5 (4.54:1); AAA: text → #40a4ba (7.24:1); AAA: background → #e0e0e0 (7.06:1)

## Brands using this color

- **Codecademy** — secondary #2c4c5c (Δ 1.765) — https://brandsweets.com/colors/brands/codecademy-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/1e4d57-a2b6be-df4e7a-1f252d-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: "#1e4d57" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.