# #63bbbb

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

## Values

- Hex: `#63bbbb`
- RGB: rgb(99, 187, 187)
- HSL: hsl(180, 39%, 56%)
- OKLCH: oklch(0.738 0.085 195.5)
- Relative luminance: 0.4178
- Nearest named color: Emerald Bliss (#4cbdac, Δ 3.161) — https://brandsweets.com/colors/emerald-bliss
- Moods: cool, modern
- Page: https://brandsweets.com/colors/63bbbb

## Tints & shades

- Tints (toward white): #71c1c1, #7fc7c7, #91cfcf, #9fd5d5, #addbdb, #bce1e1, #cae8e8, #dcefef, #eaf6f6, #f8fcfc
- Shades (toward black): #51b3b3, #48a3a3, #3e8e8e, #367c7c, #2f6a6a, #275959, #1f4747, #163232, #0e2020, #060e0e

## Harmonies

- Complementary: #bb6363
- Analogous: #63bb8f, #638fbb
- Triadic: #bb63bb, #bbbb63
- Split-complementary: #bb638f, #bb8f63
- Tetradic: #8f63bb, #bb6363, #8fbb63

## Colors that go with #63bbbb

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 #63bbbb: 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), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Harbour (https://brandsweets.com/palettes/cool#harbour). — https://brandsweets.com/colors/charcoal
- **Blue** #0000ff [pool] — 4 real palettes, including Canva's brand system and Uber's brand system put Blue beside #63bbbb, as the accent. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Uber (https://brandsweets.com/colors/brands/uber-com), Unity (https://brandsweets.com/colors/brands/unity-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #63bbbb in 5 real palettes, including Warp's brand system and Undergrowth, as the accent. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal). — https://brandsweets.com/colors/darkolivegreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #63bbbb: 5 real palettes, including Open House and Coca-Cola's brand system, as the lead colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #63bbbb: 5 real palettes, including Patreon's brand system and Unity's brand system, as the accent. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Unity (https://brandsweets.com/colors/brands/unity-com), Opensea (https://brandsweets.com/colors/brands/opensea-io), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Confluent's brand system and First Snow put Midnight Blue beside #63bbbb, as the lead colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), First Snow (https://brandsweets.com/palettes/cool#first-snow), Open House (https://brandsweets.com/palettes/clean#open-house), Ford (https://brandsweets.com/colors/brands/ford-com). — https://brandsweets.com/colors/midnightblue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Crayon Box and Lido put Mustard Yellow beside #63bbbb, as the accent. 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), Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/mustard
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #63bbbb 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/lightcoral

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

- On white (#ffffff): 2.24:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #388080 (4.6:1); AA: background → #404040 (4.62:1); AAA: text → #2a6060 (7.14:1); AAA: background → #212121 (7.17:1)
- On black (#000000): 9.36:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Taco Bell** — accent #5cb8b2 (Δ 1.599) — https://brandsweets.com/colors/brands/tacobell-com

## Fonts for this mood

- 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/63bbbb-a2bbbe-d45994-1f272d-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: "#63bbbb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.