# #63f5fd

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

## Values

- Hex: `#63f5fd`
- RGB: rgb(99, 245, 253)
- HSL: hsl(183, 97%, 69%)
- OKLCH: oklch(0.895 0.124 200.3)
- Relative luminance: 0.7505
- Nearest named color: Aggressive Aqua (#00fbff, Δ 2.962) — https://brandsweets.com/colors/aggressive-aqua
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/63f5fd

## Tints & shades

- Tints (toward white): #72f6fd, #81f7fd, #90f8fd, #a0f9fe, #affafe, #b9fafe, #c8fbfe, #d7fcfe, #e6fdff, #f5feff
- Shades (toward black): #45f3fc, #22f1fc, #04effb, #03cdd8, #03b1ba, #028f97, #027379, #015155, #013537, #001314

## Harmonies

- Complementary: #fd6b63
- Analogous: #63fdb8, #63a8fd
- Triadic: #fd63f5, #f5fd63
- Split-complementary: #fd63a8, #fdb863
- Tetradic: #b863fd, #fd6b63, #a8fd63

## Colors that go with #63f5fd

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 #63f5fd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Boeing (https://brandsweets.com/colors/brands/boeing-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #63f5fd's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai). — https://brandsweets.com/colors/deepskyblue
- **Light Coral** #f08080 [harmony, pool: complementary] — Light Coral sits directly opposite #63f5fd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/lightcoral
- **Taupe** #483c32 [pool] — Taupe is paired with #63f5fd in 9 real palettes, including Astro's brand system and Macaron, as the text colour against it. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/taupe
- **Dark Orange** #ff8c00 [harmony, pool: split] — Dark Orange is a split-complement of #63f5fd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: PayPal (https://brandsweets.com/colors/brands/paypal-com). — https://brandsweets.com/colors/darkorange
- **Crimson** #dc143c [pool] — Crimson is paired with #63f5fd in 3 real palettes, including Formula 1's brand system and Tiffany & Co.'s brand system, as the supporting colour. Seen in: Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Light Pink** #ffb6c1 [pool] — Light Pink shows up next to #63f5fd in 3 real palettes, including Macaron and Sorbet, as the lead colour. Seen in: Macaron (https://brandsweets.com/palettes/light#macaron), Sorbet (https://brandsweets.com/palettes/light#sorbet), Pastel Pop (https://brandsweets.com/palettes/playful#pastel-pop). — https://brandsweets.com/colors/lightpink
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #63f5fd: 3 real palettes, including Glacier and Astro's brand system, as the lead colour. Seen in: Glacier (https://brandsweets.com/palettes/cool#glacier), Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/steelblue

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

- On white (#ffffff): 1.31:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #028188 (4.67:1); AA: background → #636363 (4.58:1); AAA: text → #026064 (7.34:1); AAA: background → #474747 (7.08:1)
- On black (#000000): 16.01:1 — AA pass, AA-large pass, AAA pass

## 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/63f5fd-a2b9be-d4598e-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: "#63f5fd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.