# #033b3f

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

## Values

- Hex: `#033b3f`
- RGB: rgb(3, 59, 63)
- HSL: hsl(184, 91%, 13%)
- OKLCH: oklch(0.322 0.053 202.6)
- Relative luminance: 0.0351
- Nearest named color: Rich Black (#004040, Δ 1.713) — https://brandsweets.com/colors/rich-black
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/033b3f

## Tints & shades

- Tints (toward white): #05646b, #078992, #09b2be, #0bd6e5, #29e7f5, #50ecf7, #7bf0f9, #a2f5fb, #cefafd, #f5feff
- Shades (toward black): #03373a, #033236, #022e31, #02292c, #02292c, #022427, #022022, #011b1d, #011718, #011213

## Harmonies

- Complementary: #3f0703
- Analogous: #033f25, #031d3f
- Triadic: #3f033b, #3b3f03
- Split-complementary: #3f031d, #3f2503
- Tetradic: #25033f, #3f0703, #1d3f03

## Colors that go with #033b3f

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: complementary] — Crimson sits directly opposite #033b3f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Vodafone (https://brandsweets.com/colors/brands/vodafone-com). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #033b3f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Harvest (https://brandsweets.com/palettes/warm#harvest), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/sienna
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #033b3f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Astro (https://brandsweets.com/colors/brands/astro-build), Auth0 (https://brandsweets.com/colors/brands/auth0-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: analogous] — Teal is #033b3f'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), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #033b3f in 7 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), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 14 real palettes, including Instacart's brand system and Jeep's brand system put Blue beside #033b3f, as the accent. Seen in: Instacart (https://brandsweets.com/colors/brands/instacart-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Headspace (https://brandsweets.com/colors/brands/headspace-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 5 real palettes, including Rain Garden and Garden Wedding put Blush Pink beside #033b3f, as the accent. Seen in: Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Blush (https://brandsweets.com/palettes/light#blush), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono). — https://brandsweets.com/colors/blush-pink
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #033b3f: 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): 12.34:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.7:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #07848d (4.69:1); AA: background → #9e9e9e (4.61:1); AAA: text → #08a9b4 (7.34:1); AAA: background → #c4c4c4 (7.08:1)

## Brands using this color

- **N26** — accent #003b39 (Δ 1.148) — https://brandsweets.com/colors/brands/n26-com
- **Logitech** — accent #0d3a38 (Δ 1.223) — https://brandsweets.com/colors/brands/logitech-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/033b3f-a2b9be-df4e8a-1f262d-e9f1ee?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: "#033b3f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.