# #04b9cd

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#04b9cd`
- RGB: rgb(4, 185, 205)
- HSL: hsl(186, 96%, 41%)
- OKLCH: oklch(0.719 0.123 208.5)
- Relative luminance: 0.3913
- Nearest named color: Aquarius (#2db0ce, Δ 2.65) — https://brandsweets.com/colors/aquarius
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/04b9cd

## Tints & shades

- Tints (toward white): #05d4eb, #0fe3fa, #2de6fb, #4beafb, #69edfc, #82f0fc, #a0f4fd, #bef7fe, #d7fafe, #f5feff
- Shades (toward black): #04a7b9, #0399aa, #038796, #037582, #026873, #02565f, #02444b, #013237, #012428, #001214

## Harmonies

- Complementary: #cd1804
- Analogous: #04cd7d, #0454cd
- Triadic: #cd04b9, #b9cd04
- Split-complementary: #cd0454, #cd7d04
- Tetradic: #7d04cd, #cd1804, #54cd04

## Colors that go with #04b9cd

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 #04b9cd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Lido (https://brandsweets.com/palettes/vivid#lido), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/charcoal
- **Dark Orange** #ff8c00 [harmony, pool: split] — Dark Orange is a split-complement of #04b9cd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Learning App (https://brandsweets.com/palettes/playful#learning-app), PayPal (https://brandsweets.com/colors/brands/paypal-com). — https://brandsweets.com/colors/darkorange
- **Denim** #1560bd [pool] — Designers have shipped Denim with #04b9cd: 6 real palettes, including Coca-Cola's brand system and Venmo's brand system, as the accent. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #04b9cd: 5 real palettes, including Patreon's brand system and Figma's brand system, as the accent. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Figma (https://brandsweets.com/colors/brands/figma), Venmo (https://brandsweets.com/colors/brands/venmo-com), Opensea (https://brandsweets.com/colors/brands/opensea-io). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Confluent's brand system and Ford's brand system put Midnight Blue beside #04b9cd, as the lead colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Ford (https://brandsweets.com/colors/brands/ford-com), SoFi (https://brandsweets.com/colors/brands/sofi-com), Kraken (https://brandsweets.com/colors/brands/kraken-com). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #04b9cd in 7 real palettes, including Confluent's brand system and Elastic's brand system, as the supporting colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Elastic (https://brandsweets.com/colors/brands/elastic-co), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Brilliant (https://brandsweets.com/colors/brands/brilliant-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #04b9cd in 8 real palettes, including Crayon Box and Cursor's brand system, as the text colour against it. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Cursor (https://brandsweets.com/colors/brands/cursor-com), Astro (https://brandsweets.com/colors/brands/astro-build), Resort (https://brandsweets.com/palettes/light#resort). — https://brandsweets.com/colors/taupe
- **Salmon** #fa8072 [harmony: complementary] — Salmon sits directly opposite #04b9cd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/salmon

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

- On white (#ffffff): 2.38:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #038391 (4.51:1); AA: background → #3d3d3d (4.57:1); AAA: text → #025f69 (7.39:1); AAA: background → #1c1c1c (7.16:1)
- On black (#000000): 8.83:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Perplexity** — accent #1fb8cd (Δ 0.491) — https://brandsweets.com/colors/brands/perplexity
- **Prisma** — primary #00bbcb (Δ 0.725) — https://brandsweets.com/colors/brands/prisma-io
- **Prisma** — secondary #00bbcb (Δ 0.725) — https://brandsweets.com/colors/brands/prisma-io
- **Tailwind CSS** — primary #06b6d4 (Δ 1.545) — https://brandsweets.com/colors/brands/tailwind-css

## Curated palettes containing it

- **Circuit** (technical, vivid, bold) — #7c3aed, #0a0a0a, #06b6d4, #ffffff — Violet plus cyan is the current AI-product signal — pair it with pure black type to keep it from going candy. — tool: https://brandsweets.com/palettes/new/7c3aed-0a0a0a-06b6d4-ffffff — collection: https://brandsweets.com/palettes/technical
- **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

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/04b9cd-a2b8be-df4e86-1f262d-e9f1ee?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: "#04b9cd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.