# #37ae99

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

## Values

- Hex: `#37ae99`
- RGB: rgb(55, 174, 153)
- HSL: hsl(169, 52%, 45%)
- OKLCH: oklch(0.68 0.109 178.6)
- Relative luminance: 0.3338
- Nearest named color: Ambrosial Oceanside (#47ae9c, Δ 1.132) — https://brandsweets.com/colors/ambrosial-oceanside
- Moods: neutral
- Page: https://brandsweets.com/colors/37ae99

## Tints & shades

- Tints (toward white): #3dc2a9, #54c9b4, #68cfbc, #7bd5c5, #92ddcf, #a6e3d8, #b9e9e0, #cdefe9, #e4f6f3, #f7fdfc
- Shades (toward black): #329f8b, #2d8f7d, #288070, #237062, #1f6155, #184e44, #143e36, #0f2f29, #0a1f1b, #05100e

## Harmonies

- Complementary: #ae374d
- Analogous: #37ae5d, #3789ae
- Triadic: #9937ae, #ae9937
- Split-complementary: #ae3789, #ae5d37
- Tetradic: #5d37ae, #ae374d, #89ae37

## Colors that go with #37ae99

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 #37ae99: softer than #000 and cool enough to feel like part of the same palette. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Coastal (https://brandsweets.com/palettes/cool#coastal), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/charcoal
- **Hot Pink** #ff69b4 [harmony, pool: complementary] — Hot Pink sits directly opposite #37ae99 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/hotpink
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #37ae99: 4 real palettes, including Canva's brand system and Arctic, as the supporting colour. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Arctic (https://brandsweets.com/palettes/clean#arctic), Spotify (https://brandsweets.com/colors/brands/spotify), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/cornflowerblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #37ae99: 4 real palettes, including Unity's brand system and Spline's brand system, as the lead colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Spline (https://brandsweets.com/colors/brands/spline-design), Studio Grey (https://brandsweets.com/palettes/minimal#studio-grey), Playground (https://brandsweets.com/palettes/bold#playground). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Fintech Trust and Ford's brand system put Midnight Blue beside #37ae99, as the text colour against it. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Ford (https://brandsweets.com/colors/brands/ford-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/midnightblue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Diner and Lido put Mustard Yellow beside #37ae99, as the accent. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner), Lido (https://brandsweets.com/palettes/vivid#lido), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #37ae99 in 7 real palettes, including Khan Academy's brand system and Brilliant's brand system, as the accent. Seen in: Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Confluent (https://brandsweets.com/colors/brands/confluent-io), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/royalblue
- **Slate Gray** #708090 [pool] — 4 real palettes, including Indigo SaaS and Ledger Dark put Slate Gray beside #37ae99, as the supporting colour. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Graphite (https://brandsweets.com/palettes/technical#graphite). — https://brandsweets.com/colors/slategray

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

- On white (#ffffff): 2.74:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #2a8473 (4.52:1); AA: background → #333333 (4.62:1); AAA: text → #1f6155 (7.24:1); AAA: background → #0f0f0f (7.01:1)
- On black (#000000): 7.68:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **N26** — primary #48ac98 (Δ 1.059) — https://brandsweets.com/colors/brands/n26-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/37ae99-a2bebc-d459ab-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: "#37ae99" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.