# #366db0

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

## Values

- Hex: `#366db0`
- RGB: rgb(54, 109, 176)
- HSL: hsl(213, 53%, 45%)
- OKLCH: oklch(0.53 0.121 254.7)
- Relative luminance: 0.1486
- Nearest named color: Campanula (#3473b7, Δ 1.821) — https://brandsweets.com/colors/campanula
- Moods: cool, modern
- Page: https://brandsweets.com/colors/366db0

## Tints & shades

- Tints (toward white): #3c79c3, #5389ca, #6796d0, #7aa4d6, #92b4dd, #a5c1e3, #b9cfe9, #ccdcef, #e4ecf7, #f7fafd
- Shades (toward black): #3163a0, #2c5990, #285081, #234671, #1e3c62, #18304e, #13273e, #0e1d2f, #0a131f, #050a10

## Harmonies

- Complementary: #b07936
- Analogous: #36a9b0, #3c36b0
- Triadic: #b0366d, #6db036
- Split-complementary: #b03c36, #a9b036
- Tetradic: #b036a9, #b07936, #36b03c

## Colors that go with #366db0

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 #366db0: softer than #000 and cool enough to feel like part of the same palette. Seen in: Amazon (https://brandsweets.com/colors/brands/amazon-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/charcoal
- **Firebrick** #b22222 [harmony, pool: triadic] — Firebrick completes a triad with #366db0 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: AT&T (https://brandsweets.com/colors/brands/att-com), Honda (https://brandsweets.com/colors/brands/honda-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/firebrick
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #366db0 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Intel (https://brandsweets.com/colors/brands/intel-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #366db0 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dyson (https://brandsweets.com/colors/brands/dyson-com). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #366db0 in 9 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 10 real palettes, including Activision's brand system and Pixar's brand system put Blue beside #366db0, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), BBC (https://brandsweets.com/colors/brands/bbc-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #366db0: 10 real palettes, including Glacier and General Mills's brand system, as the accent. Seen in: Glacier (https://brandsweets.com/palettes/cool#glacier), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #366db0: 4 real palettes, including Coca-Cola's brand system and NBA's brand system, as the supporting colour. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), NBA (https://brandsweets.com/colors/brands/nba-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/cornflowerblue

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

- On white (#ffffff): 5.29:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #2c5990 (7.15:1)
- On black (#000000): 3.97:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #3b76bf (4.53:1); AA: background → #ededed (4.52:1); AAA: text → #6b99d1 (7.1:1)

## Brands using this color

- **The New York Times** — secondary #346eb7 (Δ 1.085) — https://brandsweets.com/colors/brands/nytimes-com
- **British Airways** — secondary #3468ad (Δ 1.466) — https://brandsweets.com/colors/brands/britishairways-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/366db0-9ca9c4-df584e-1f202d-e9f0f1?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: "#366db0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.