# #237b71

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

## Values

- Hex: `#237b71`
- RGB: rgb(35, 123, 113)
- HSL: hsl(173, 56%, 31%)
- OKLCH: oklch(0.529 0.083 184.1)
- Relative luminance: 0.1572
- Nearest named color: Emperor Jade (#007b75, Δ 1.183) — https://brandsweets.com/colors/emperor-jade
- Moods: neutral
- Page: https://brandsweets.com/colors/237b71

## Tints & shades

- Tints (toward white): #2b978b, #31afa0, #3cc8b8, #58d0c2, #74d8cc, #8cded5, #a7e6df, #c3eee9, #dbf5f2, #f7fdfc
- Shades (toward black): #1f6f66, #1d675f, #1a5b54, #165049, #144842, #113c37, #0d302c, #0a2421, #081c1a, #04100f

## Harmonies

- Complementary: #7b232d
- Analogous: #237b45, #23597b
- Triadic: #71237b, #7b7123
- Split-complementary: #7b2359, #7b4523
- Tetradic: #45237b, #7b232d, #597b23

## Colors that go with #237b71

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 #237b71: softer than #000 and cool enough to feel like part of the same palette. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/charcoal
- **Medium Violet Red** #c71585 [harmony, pool: complementary] — Medium Violet Red sits directly opposite #237b71 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
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #237b71: 4 real palettes, including Intel's brand system and Ink & Paper, as the lead colour. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #237b71: 6 real palettes, including Riverbed and Wellness, as the accent. Seen in: Riverbed (https://brandsweets.com/palettes/muted#riverbed), Wellness (https://brandsweets.com/palettes/warm#wellness), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Desert Road (https://brandsweets.com/palettes/warm#desert-road). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #237b71 in 8 real palettes, including Gemstone and Redfin's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Redfin (https://brandsweets.com/colors/brands/redfin-com), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #237b71: 12 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour. Seen in: 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), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #237b71: 5 real palettes, including Wendy's's brand system and Fireside, as the supporting colour. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com), Fireside (https://brandsweets.com/palettes/dark#fireside), Newsprint (https://brandsweets.com/palettes/editorial#newsprint), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/firebrick
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #237b71 in 4 real palettes, including Mid-Century and Sapphire & Gold, as the accent. Seen in: Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Fireside (https://brandsweets.com/palettes/dark#fireside), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/goldenrod

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

- On white (#ffffff): 5.07:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1c635b (7.03:1)
- On black (#000000): 4.14:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #258378 (4.6:1); AA: background → #f2f2f2 (4.53:1); AAA: text → #2fa799 (7.11:1)

## Brands using this color

- **N26** — secondary #088177 (Δ 1.813) — https://brandsweets.com/colors/brands/n26-com

## Curated palettes containing it

- **Magazine Ochre** (editorial, warm, muted) — #b45309, #6b5b45, #0f766e, #f7f3ec, #1f1a14 — Ochre and walnut on unbleached stock, with teal as the counterpoint — a features-section palette with some heat in it. — tool: https://brandsweets.com/palettes/new/b45309-6b5b45-0f766e-f7f3ec-1f1a14 — collection: https://brandsweets.com/palettes/editorial
- **Saffron** (warm, vivid, elegant) — #d97706, #7c2d12, #0f766e, #fffaf0, #2a1b0c — Saffron and clove with a teal counterpoint — spice-market warmth, balanced so it doesn't go orange everywhere. — tool: https://brandsweets.com/palettes/new/d97706-7c2d12-0f766e-fffaf0-2a1b0c — collection: https://brandsweets.com/palettes/warm
- **Gemstone** (jewel-tones, vivid, dark, luxury) — #0f766e, #7e22ce, #e11d48, #0f0a1a, #f5eef8 — Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic. — tool: https://brandsweets.com/palettes/new/0f766e-7e22ce-e11d48-0f0a1a-f5eef8 — collection: https://brandsweets.com/palettes/jewel-tones

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/237b71-a2bebe-d459a3-1f292d-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: "#237b71" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.