# #3370d1

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

## Values

- Hex: `#3370d1`
- RGB: rgb(51, 112, 209)
- HSL: hsl(217, 63%, 51%)
- OKLCH: oklch(0.557 0.163 259.4)
- Relative luminance: 0.169
- Nearest named color: God of Rain (#4466cc, Δ 2.751) — https://brandsweets.com/colors/god-of-rain
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/3370d1

## Tints & shades

- Tints (toward white): #487ed5, #598ad9, #6e99de, #82a7e3, #97b6e7, #a8c2eb, #bcd0f0, #d1dff5, #e2ebf8, #f7f9fd
- Shades (toward black): #2b64bf, #285baf, #23509a, #1e4685, #1a3d74, #163260, #11274b, #0c1c36, #081425, #040911

## Harmonies

- Complementary: #d19433
- Analogous: #33bed1, #4633d1
- Triadic: #d13370, #70d133
- Split-complementary: #d14633, #bed133
- Tetradic: #d133be, #d19433, #33d146

## Colors that go with #3370d1

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 #3370d1: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-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
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #3370d1 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com). — https://brandsweets.com/colors/crimson
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #3370d1 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-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
- **Amber** #ffbf00 [pool] — Amber is paired with #3370d1 in 11 real palettes, including Walmart's brand system and Wikipedia's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), NBA (https://brandsweets.com/colors/brands/nba-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 16 real palettes, including Pixar's brand system and BBC's brand system put Blue beside #3370d1, as the accent. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), BBC (https://brandsweets.com/colors/brands/bbc-com), EA (https://brandsweets.com/colors/brands/ea-com), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #3370d1: 13 real palettes, including Intel's brand system and General Mills's brand system, as the lead colour. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Unilever (https://brandsweets.com/colors/brands/unilever-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #3370d1: 6 real palettes, including NBA's brand system and Coca-Cola's brand system, as the accent. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #3370d1: 8 real palettes, including Astro's brand system and Venmo's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.8:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #2657a6 (7.01:1)
- On black (#000000): 4.38:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #3773d2 (4.55:1); AA: background → #fafafa (4.59:1); AAA: text → #6996dd (7.01:1)

## Brands using this color

- **Subaru** — secondary #1971d4 (Δ 1.477) — https://brandsweets.com/colors/brands/subaru-com
- **Pizza Hut** — accent #266dcc (Δ 1.525) — https://brandsweets.com/colors/brands/pizzahut-com

## 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/3370d1-9ca7c4-df624e-201f2d-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: "#3370d1" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.