# #378af6

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

## Values

- Hex: `#378af6`
- RGB: rgb(55, 138, 246)
- HSL: hsl(214, 91%, 59%)
- OKLCH: oklch(0.639 0.18 256.6)
- Relative luminance: 0.2564
- Nearest named color: dodgerblue (#1e90ff, Δ 1.991) — https://brandsweets.com/colors/dodgerblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/378af6

## Tints & shades

- Tints (toward white): #4b95f7, #5ea1f7, #72acf8, #85b8f9, #99c3fa, #a7ccfb, #bbd7fc, #cee2fd, #e2eefe, #f5f9ff
- Shades (toward black): #1f7bf4, #0b6cea, #0a60d1, #0853b4, #07489c, #063a7f, #052f66, #032249, #021631, #010913

## Harmonies

- Complementary: #f6a337
- Analogous: #37e9f6, #4437f6
- Triadic: #f6378a, #8af637
- Split-complementary: #f64437, #e9f637
- Tetradic: #f637e9, #f6a337, #37f644

## Colors that go with #378af6

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 #378af6: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Blizzard (https://brandsweets.com/colors/brands/blizzard-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/charcoal
- **Red** #ff0000 [harmony, pool: triadic] — Red completes a triad with #378af6 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Databricks (https://brandsweets.com/colors/brands/databricks-com), Vercel (https://brandsweets.com/colors/brands/vercel), Rotten Tomatoes (https://brandsweets.com/colors/brands/rottentomatoes-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/red
- **Amber** #ffbf00 [pool] — Amber is paired with #378af6 in 11 real palettes, including Google's brand system and Heatwave, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Unity's brand system and Readymag's brand system put Blue beside #378af6, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Cargo (https://brandsweets.com/colors/brands/cargo-site). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #378af6: 10 real palettes, including Carrefour's brand system and Blue Mono, as the accent. Seen in: Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Behance (https://brandsweets.com/colors/brands/behance-net), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #378af6 in 9 real palettes, including Behance's brand system and NASCAR's brand system, as the accent. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), WWE (https://brandsweets.com/colors/brands/wwe-com). — https://brandsweets.com/colors/crimson
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #378af6 in 4 real palettes, including Playground and Elastic's brand system, as the lead colour. Seen in: Playground (https://brandsweets.com/palettes/bold#playground), Elastic (https://brandsweets.com/colors/brands/elastic-co), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #378af6: 11 real palettes, including Venmo's brand system and Patreon's brand system, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Patreon (https://brandsweets.com/colors/brands/patreon-com), Figma (https://brandsweets.com/colors/brands/figma), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 3.43:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #0b70f4 (4.53:1); AA: background → #242424 (4.53:1); AAA: text → #0853b4 (7.22:1)
- On black (#000000): 6.13:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #5098f7 (7.18:1)

## Brands using this color

- **Google** — primary #4285f4 (Δ 1.346) — https://brandsweets.com/colors/brands/google-com
- **HashiCorp** — secondary #2b89ff (Δ 1.53) — https://brandsweets.com/colors/brands/hashicorp-com
- **Coursera** — secondary #3286ff (Δ 1.841) — https://brandsweets.com/colors/brands/coursera-org

## Curated palettes containing it

- **Studio Grey** (minimal, muted, modern) — #1a1a1a, #8c8c8c, #3a86ff, #f2f2f2 — A pure greyscale with a single electric blue — the portfolio palette that makes work look considered. — tool: https://brandsweets.com/palettes/new/1a1a1a-8c8c8c-3a86ff-f2f2f2 — collection: https://brandsweets.com/palettes/minimal

## 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/378af6-9ca9c4-df5a4e-1f1f2d-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: "#378af6" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.