# #343df4

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

## Values

- Hex: `#343df4`
- RGB: rgb(52, 61, 244)
- HSL: hsl(237, 90%, 58%)
- OKLCH: oklch(0.498 0.263 269.9)
- Relative luminance: 0.106
- Nearest named color: C64 Blue (#003aff, Δ 3.678) — https://brandsweets.com/colors/c64-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/343df4

## Tints & shades

- Tints (toward white): #4750f5, #5a62f6, #6e75f7, #8187f8, #9499f9, #a8acfa, #bbbefb, #cfd1fc, #e2e3fd, #f5f6fe
- Shades (toward black): #1b26f3, #0c17e4, #0b14cb, #0911ae, #080f96, #070d7e, #050a61, #040749, #02042c, #010213

## Harmonies

- Complementary: #f4eb34
- Analogous: #349ef4, #8a34f4
- Triadic: #f4343d, #3df434
- Split-complementary: #f48a34, #9ef434
- Tetradic: #f4349e, #f4eb34, #34f48a

## Colors that go with #343df4

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 #343df4: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), HP (https://brandsweets.com/colors/brands/hp-com), Zoom (https://brandsweets.com/colors/brands/zoom-us), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #343df4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Toyota (https://brandsweets.com/colors/brands/toyota-com), Chase (https://brandsweets.com/colors/brands/chase-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/crimson
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #343df4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Intel (https://brandsweets.com/colors/brands/intel-com), Kia (https://brandsweets.com/colors/brands/kia-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #343df4 in 6 real palettes, including Walmart's brand system and Binance's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), Binance (https://brandsweets.com/colors/brands/binance-com), NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #343df4: 11 real palettes, including NHL's brand system and Zillow's brand system, as the accent. Seen in: NHL (https://brandsweets.com/colors/brands/nhl-com), Zillow (https://brandsweets.com/colors/brands/zillow-com), Oreo (https://brandsweets.com/colors/brands/oreo-com), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #343df4: 10 real palettes, including Qualcomm's brand system and Roblox's brand system, as the supporting colour. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Roblox (https://brandsweets.com/colors/brands/roblox-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #343df4: 4 real palettes, including Warp's brand system and Elastic's brand system, as the lead colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Elastic (https://brandsweets.com/colors/brands/elastic-co), Calm (https://brandsweets.com/colors/brands/calm-com), Kraken (https://brandsweets.com/colors/brands/kraken-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #343df4: 9 real palettes, including Pixar's brand system and Dairy Queen's brand system, as the supporting colour. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com), Chase (https://brandsweets.com/colors/brands/chase-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 6.73:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #2a34f4 (7.25:1)
- On black (#000000): 3.12:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #5a62f6 (4.51:1); AA: background → #d4d4d4 (4.54:1); AAA: text → #868cf9 (7.13:1)

## 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/343df4-9f9cc4-df924e-251f2d-e9edf1?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: "#343df4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.