# #398bef

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

## Values

- Hex: `#398bef`
- RGB: rgb(57, 139, 239)
- HSL: hsl(213, 85%, 58%)
- OKLCH: oklch(0.637 0.17 255.4)
- Relative luminance: 0.2557
- Nearest named color: dodgerblue (#1e90ff, Δ 2.631) — https://brandsweets.com/colors/dodgerblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/398bef

## Tints & shades

- Tints (toward white): #4c96f0, #5fa1f2, #71acf4, #84b7f5, #97c2f7, #aacdf8, #bdd8fa, #d0e3fb, #e3eefd, #f6f9fe
- Shades (toward black): #217ded, #126ede, #1062c6, #0e54aa, #0c4892, #0a3d7b, #082f5e, #062347, #03152a, #020913

## Harmonies

- Complementary: #ef9d39
- Analogous: #39e6ef, #4239ef
- Triadic: #ef398b, #8bef39
- Split-complementary: #ef4239, #e6ef39
- Tetradic: #ef39e6, #ef9d39, #39ef42

## Colors that go with #398bef

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 #398bef: 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), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #398bef — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: NASCAR (https://brandsweets.com/colors/brands/nascar-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Behance (https://brandsweets.com/colors/brands/behance-net), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #398bef in 12 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), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 11 real palettes, including Readymag's brand system and Unity's brand system put Blue beside #398bef, as the supporting colour. Seen in: Readymag (https://brandsweets.com/colors/brands/readymag-com), Unity (https://brandsweets.com/colors/brands/unity-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 #398bef: 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), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #398bef 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 #398bef: 10 real palettes, including Patreon's brand system and Venmo's brand system, as the supporting colour. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Figma (https://brandsweets.com/colors/brands/figma), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #398bef: 19 real palettes, including Venmo's brand system and Coursera's brand system, as the accent. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Coursera (https://brandsweets.com/colors/brands/coursera-org), Apple (https://brandsweets.com/colors/brands/apple-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 3.44:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1372e7 (4.58:1); AA: background → #242424 (4.52:1); AAA: text → #0e56af (7.07:1)
- On black (#000000): 6.11:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #5099f1 (7.17:1)

## Brands using this color

- **Google** — primary #4285f4 (Δ 1.863) — https://brandsweets.com/colors/brands/google-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/398bef-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: "#398bef" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.