# #4e21e4

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

## Values

- Hex: `#4e21e4`
- RGB: rgb(78, 33, 228)
- HSL: hsl(254, 78%, 51%)
- OKLCH: oklch(0.467 0.26 280)
- Relative luminance: 0.0831
- Nearest named color: Blustering Blue (#4411ff, Δ 4.642) — https://brandsweets.com/colors/blustering-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/4e21e4

## Tints & shades

- Tints (toward white): #6037e6, #6f49e9, #8160eb, #9377ee, #a58ef1, #b3a0f3, #c5b6f6, #d7cdf9, #e6dffb, #f8f6fe
- Shades (toward black): #451ad1, #3f18bf, #3715a8, #301291, #2a107f, #220d68, #1b0a52, #13073b, #0d0529, #060212

## Harmonies

- Complementary: #b6e421
- Analogous: #2155e4, #b021e4
- Triadic: #e44e21, #21e44e
- Split-complementary: #e4b021, #55e421
- Tetradic: #e42155, #b6e421, #21e4b0

## Colors that go with #4e21e4

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 #4e21e4: 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), UEFA (https://brandsweets.com/colors/brands/uefa-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [harmony, pool: analogous] — Denim is #4e21e4's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/denim
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #4e21e4: 10 real palettes, including Unilever's brand system and Zillow's brand system, as the supporting colour. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-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 #4e21e4: 6 real palettes, including Qualcomm's brand system and Canva's brand system, as the supporting colour. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify), Roblox (https://brandsweets.com/colors/brands/roblox-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #4e21e4 in 7 real palettes, including Behance's brand system and Dunkin''s brand system, as the accent. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #4e21e4: 6 real palettes, including Cargo's brand system and Readymag's brand system, as the lead colour. Seen in: Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com), Samsung (https://brandsweets.com/colors/brands/samsung-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #4e21e4: 5 real palettes, including 3M's brand system and MLB's brand system, as the supporting colour. Seen in: 3M (https://brandsweets.com/colors/brands/3m-com), MLB (https://brandsweets.com/colors/brands/mlb-com), Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Bose (https://brandsweets.com/colors/brands/bose-com). — https://brandsweets.com/colors/firebrick
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #4e21e4 in 5 real palettes, including Indigo SaaS and Spotify's brand system, as the accent. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 7.89:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.66:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7d5ceb (4.6:1); AA: background → #c4c4c4 (4.52:1); AAA: text → #9e84f0 (7.01:1); AAA: background → #f2f2f2 (7.05:1)

## 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/4e21e4-aa9cc4-dfbb4e-291f2d-e9ebf1?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: "#4e21e4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.