# #503fe4

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

## Values

- Hex: `#503fe4`
- RGB: rgb(80, 63, 228)
- HSL: hsl(246, 75%, 57%)
- OKLCH: oklch(0.501 0.236 278.2)
- Relative luminance: 0.1086
- Nearest named color: Blurple (#5539cc, Δ 4.063) — https://brandsweets.com/colors/blurple
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/503fe4

## Tints & shades

- Tints (toward white): #6051e6, #7063e9, #8175eb, #9187ee, #a59df1, #b6aff4, #c6c1f6, #d6d2f9, #e7e4fb, #f7f6fe
- Shades (toward black): #3b29e0, #2f1dcd, #2a1ab7, #2517a1, #20148a, #191070, #140d59, #0f0a43, #090628, #040312

## Harmonies

- Complementary: #d3e43f
- Analogous: #3f81e4, #a23fe4
- Triadic: #e4503f, #3fe450
- Split-complementary: #e4a23f, #81e43f
- Tetradic: #e43f81, #d3e43f, #3fe4a2

## Colors that go with #503fe4

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 #503fe4: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), UEFA (https://brandsweets.com/colors/brands/uefa-com), HP (https://brandsweets.com/colors/brands/hp-com), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #503fe4 — 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), 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 #503fe4 in 6 real palettes, including Walmart's brand system and Mastodon hosted on mastodon.social's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Headspace's brand system and Dropbox's brand system put Blue beside #503fe4, as the accent. Seen in: Headspace (https://brandsweets.com/colors/brands/headspace-com), Dropbox (https://brandsweets.com/colors/brands/dropbox-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), BBC (https://brandsweets.com/colors/brands/bbc-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #503fe4: 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), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #503fe4: 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), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #503fe4 in 14 real palettes, including Coinbase's brand system and Chase's brand system. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Chase (https://brandsweets.com/colors/brands/chase-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #503fe4: 5 real palettes, including Kraken's brand system and Calm's brand system, as the accent. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Calm (https://brandsweets.com/colors/brands/calm-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 6.62:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4736e2 (7.26:1)
- On black (#000000): 3.17:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #7063e9 (4.65:1); AA: background → #d6d6d6 (4.55:1); AAA: text → #958bee (7.21:1)

## Curated palettes containing it

- **Indigo SaaS** (modern, cool, clean) — #4f46e5, #6b7280, #10b981, #ffffff, #111827 — The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states. — tool: https://brandsweets.com/palettes/new/4f46e5-6b7280-10b981-ffffff-111827 — collection: https://brandsweets.com/palettes/modern

## 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/503fe4-a59cc4-dfa74e-271f2d-e9ecf1?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: "#503fe4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.