# #19b8a3

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

## Values

- Hex: `#19b8a3`
- RGB: rgb(25, 184, 163)
- HSL: hsl(172, 76%, 41%)
- OKLCH: oklch(0.703 0.123 180.5)
- Relative luminance: 0.3713
- Nearest named color: lightseagreen (#20b2aa, Δ 2.32) — https://brandsweets.com/colors/lightseagreen
- Moods: vivid
- Page: https://brandsweets.com/colors/19b8a3

## Tints & shades

- Tints (toward white): #1dd3bb, #28e2c9, #43e5d0, #5de9d6, #78eddd, #8ff0e3, #aaf3ea, #c5f7f0, #dbfaf6, #f6fefd
- Shades (toward black): #17a693, #159987, #128777, #107567, #0e675b, #0c554b, #09433c, #07312c, #052420, #021210

## Harmonies

- Complementary: #b8192e
- Analogous: #19b853, #197eb8
- Triadic: #a319b8, #b8a319
- Split-complementary: #b8197e, #b85319
- Tetradic: #5319b8, #b8192e, #7eb819

## Colors that go with #19b8a3

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 #19b8a3: 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), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Hot Pink** #ff69b4 [harmony, pool: complementary] — Hot Pink sits directly opposite #19b8a3 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
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Fintech Trust and Ford's brand system put Midnight Blue beside #19b8a3, 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), Confluent (https://brandsweets.com/colors/brands/confluent-io), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/midnightblue
- **Mustard Yellow** #ffdb58 [pool] — 5 real palettes, including Crayon Box and Diner put Mustard Yellow beside #19b8a3, as the accent. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Diner (https://brandsweets.com/palettes/vivid#diner), Lido (https://brandsweets.com/palettes/vivid#lido), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #19b8a3 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), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #19b8a3 in 13 real palettes, including Resort and Crayon Box, as the text colour against it. Seen in: Resort (https://brandsweets.com/palettes/light#resort), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Chime (https://brandsweets.com/colors/brands/chime-com), Polaroid (https://brandsweets.com/palettes/light#polaroid). — https://brandsweets.com/colors/taupe
- **Tomato** #ff6347 [harmony, pool: split] — Tomato is a split-complement of #19b8a3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Lido (https://brandsweets.com/palettes/vivid#lido), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/tomato
- **Blue** #0000ff [pool] — 3 real palettes, including Unity's brand system and Canva's brand system put Blue beside #19b8a3, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 2.49:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #128273 (4.7:1); AA: background → #383838 (4.71:1); AAA: text → #0d6357 (7.14:1); AAA: background → #171717 (7.19:1)
- On black (#000000): 8.43:1 — AA pass, AA-large pass, AAA pass

## Curated palettes containing it

- **Lagoon** (ocean, vivid, light, summer) — #06b6d4, #14b8a6, #fde68a, #ffffff, #134e4a — Turquoise and teal with a sand-yellow on white — shallow tropical water; the deep teal text is the reef. — tool: https://brandsweets.com/palettes/new/06b6d4-14b8a6-fde68a-ffffff-134e4a — collection: https://brandsweets.com/palettes/ocean

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/19b8a3-a2bebe-d459a5-1f292d-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: "#19b8a3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.