# #1c3045

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

## Values

- Hex: `#1c3045`
- RGB: rgb(28, 48, 69)
- HSL: hsl(211, 42%, 19%)
- OKLCH: oklch(0.303 0.046 250.7)
- Relative luminance: 0.0279
- Nearest named color: Blue Whale (#1e3442, Δ 1.662) — https://brandsweets.com/colors/blue-whale
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/1c3045

## Tints & shades

- Tints (toward white): #284462, #34587f, #406c9c, #4e80b7, #6b95c2, #84a7cd, #a1bcd9, #bed0e4, #dbe5f0, #f8fafc
- Shades (toward black): #1b2d41, #18283a, #162636, #13212f, #121e2b, #0f1924, #0d1721, #0a1219, #090f16, #060a0e

## Harmonies

- Complementary: #45311c
- Analogous: #1c4445, #1d1c45
- Triadic: #451c30, #30451c
- Split-complementary: #451d1c, #44451c
- Tetradic: #451c44, #45311c, #1c451d

## Colors that go with #1c3045

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

- **Dark Olive Green** #556b2f [harmony, pool: split] — Dark Olive Green is a split-complement of #1c3045: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth). — https://brandsweets.com/colors/darkolivegreen
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #1c3045 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), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #1c3045's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), GitLab (https://brandsweets.com/colors/brands/gitlab), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas). — https://brandsweets.com/colors/slateblue
- **Teal** #008080 [harmony, pool: analogous] — Teal is #1c3045's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Alpine (https://brandsweets.com/palettes/cool#alpine), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Stanley (https://brandsweets.com/colors/brands/stanley1913-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #1c3045 in 9 real palettes, including Beach Hut and McDonald's's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 18 real palettes, including Monzo's brand system and Minecraft's brand system put Blue beside #1c3045, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Headspace (https://brandsweets.com/colors/brands/headspace-com), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 6 real palettes, including Rain Garden and Blush put Blush Pink beside #1c3045, as the accent. Seen in: Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Blush (https://brandsweets.com/palettes/light#blush), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding). — https://brandsweets.com/colors/blush-pink
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #1c3045: 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): 13.48:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.56:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4779ae (4.61:1); AA: background → #969696 (4.56:1); AAA: text → #729ac5 (7.14:1); AAA: background → #bdbdbd (7.17:1)

## Brands using this color

- **Amazon** — secondary #232f3e (Δ 1.464) — https://brandsweets.com/colors/brands/amazon-com
- **UEFA** — secondary #1a313c (Δ 1.844) — https://brandsweets.com/colors/brands/uefa-com
- **Volkswagen** — secondary #293043 (Δ 1.859) — https://brandsweets.com/colors/brands/vw-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/1c3045-9cabc4-df534e-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: "#1c3045" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.