# #278b74

A color — neutral. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#278b74`
- RGB: rgb(39, 139, 116)
- HSL: hsl(166, 56%, 35%)
- OKLCH: oklch(0.574 0.097 173.9)
- Relative luminance: 0.2016
- Nearest named color: Elf (#1b8a6b, Δ 1.533) — https://brandsweets.com/colors/elf
- Moods: neutral
- Page: https://brandsweets.com/colors/278b74

## Tints & shades

- Tints (toward white): #2ea388, #36bf9f, #48cbad, #60d2b7, #7cdac4, #94e1cf, #abe7d9, #c3eee4, #dff6f1, #f7fdfb
- Shades (toward black): #247f6a, #217360, #1d6756, #1a5b4c, #165042, #124035, #0f342b, #0b2821, #081c17, #04100d

## Harmonies

- Complementary: #8b273f
- Analogous: #278b42, #27718b
- Triadic: #74278b, #8b7427
- Split-complementary: #8b2771, #8b4227
- Tetradic: #42278b, #8b273f, #718b27

## Colors that go with #278b74

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #278b74: softer than #000 and cool enough to feel like part of the same palette. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Asana (https://brandsweets.com/colors/brands/asana-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: triadic] — Copper completes a triad with #278b74 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [harmony, pool: split] — Crimson is a split-complement of #278b74: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix), Coinbase (https://brandsweets.com/colors/brands/coinbase), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/crimson
- **Medium Violet Red** #c71585 [harmony, pool: complementary] — Medium Violet Red sits directly opposite #278b74 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Bun (https://brandsweets.com/colors/brands/bun-sh). — https://brandsweets.com/colors/mediumvioletred
- **Denim** #1560bd [pool] — Designers have shipped Denim with #278b74: 7 real palettes, including Peacock and Intel's brand system, as the supporting colour. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock), Intel (https://brandsweets.com/colors/brands/intel-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 5 real palettes, including Paramount+'s brand system and Tide Pool put Midnight Blue beside #278b74, as the supporting colour. Seen in: Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/midnightblue
- **Orange** #ffa500 [pool] — 4 real palettes, including Farmers Market and Campus put Orange beside #278b74, as the accent. Seen in: Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), Campus (https://brandsweets.com/palettes/friendly#campus), Graphite (https://brandsweets.com/palettes/technical#graphite), Olympics (https://brandsweets.com/colors/brands/olympics-com). — https://brandsweets.com/colors/orange
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #278b74 in 6 real palettes, including Subaru's brand system and Coinbase's brand system, as the supporting colour. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Slate Workspace (https://brandsweets.com/palettes/minimal#slate-workspace), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/royalblue

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 4.17:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #25836d (4.62:1); AA: background → #0f0f0f (4.59:1); AAA: text → #1c6353 (7.1:1)
- On black (#000000): 5.03:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #2fa78b (7.02:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/278b74-a2bebb-d459b1-1f2a2d-e9f1ec?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: "#278b74" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.