# #37b3ab

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

## Values

- Hex: `#37b3ab`
- RGB: rgb(55, 179, 171)
- HSL: hsl(176, 53%, 46%)
- OKLCH: oklch(0.698 0.107 188.7)
- Relative luminance: 0.3599
- Nearest named color: lightseagreen (#20b2aa, Δ 1.033) — https://brandsweets.com/colors/lightseagreen
- Moods: neutral
- Page: https://brandsweets.com/colors/37b3ab

## Tints & shades

- Tints (toward white): #40c4bb, #53cac2, #6bd1cb, #7ed7d2, #92ddd8, #a5e3df, #b9e9e6, #d0f1ee, #e4f7f5, #f7fdfc
- Shades (toward black): #32a49c, #2e948d, #28817b, #23716c, #1e625d, #19524e, #14423f, #0e2f2d, #0a1f1e, #05100f

## Harmonies

- Complementary: #b3373f
- Analogous: #37b36d, #377eb3
- Triadic: #ab37b3, #b3ab37
- Split-complementary: #b3377e, #b36d37
- Tetradic: #6d37b3, #b3373f, #7eb337

## Colors that go with #37b3ab

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 #37b3ab: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), N26 (https://brandsweets.com/colors/brands/n26-com), Lido (https://brandsweets.com/palettes/vivid#lido), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [pool] — Designers have shipped Denim with #37b3ab: 4 real palettes, including Open House and Peacock, as the lead colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Peacock (https://brandsweets.com/palettes/vivid#peacock), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #37b3ab: 4 real palettes, including Unity's brand system and Patreon's brand system, as the lead colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Patreon (https://brandsweets.com/colors/brands/patreon-com), Spline (https://brandsweets.com/colors/brands/spline-design), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Ford's brand system and Confluent's brand system put Midnight Blue beside #37b3ab, as the lead colour. Seen in: Ford (https://brandsweets.com/colors/brands/ford-com), Confluent (https://brandsweets.com/colors/brands/confluent-io), SoFi (https://brandsweets.com/colors/brands/sofi-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/midnightblue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Lido and Diner put Mustard Yellow beside #37b3ab, as the accent. Seen in: Lido (https://brandsweets.com/palettes/vivid#lido), Diner (https://brandsweets.com/palettes/vivid#diner), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #37b3ab in 4 real palettes, including Cursor's brand system and Launch Orange, as the lead colour. Seen in: Cursor (https://brandsweets.com/colors/brands/cursor-com), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), Neon (https://brandsweets.com/colors/brands/neon-tech), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/orangered
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #37b3ab in 5 real palettes, including Khan Academy's brand system and Confluent's brand system, as the accent. Seen in: Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Confluent (https://brandsweets.com/colors/brands/confluent-io), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/royalblue
- **Tomato** #ff6347 [harmony, pool: split] — Tomato is a split-complement of #37b3ab: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: 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/tomato

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

- On white (#ffffff): 2.56:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #28817b (4.65:1); AA: background → #383838 (4.58:1); AAA: text → #1e625d (7.09:1); AAA: background → #141414 (7.19:1)
- On black (#000000): 8.2:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/37b3ab-a2bdbe-d4599d-1f282d-e9f1ed?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: "#37b3ab" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.