# #581cfd

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

## Values

- Hex: `#581cfd`
- RGB: rgb(88, 28, 253)
- HSL: hsl(256, 98%, 55%)
- OKLCH: oklch(0.499 0.286 280.5)
- Relative luminance: 0.1
- Nearest named color: Meteor Shower (#5533ff, Δ 2.345) — https://brandsweets.com/colors/meteor-shower
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/581cfd

## Tints & shades

- Tints (toward white): #6730fd, #7949fd, #885dfd, #9772fe, #aa8bfe, #b89ffe, #c7b3fe, #d6c7fe, #e9e1ff, #f8f5ff
- Shades (toward black): #4503fc, #3e02e3, #3702ca, #3002b1, #2a0297, #210179, #1a0160, #130147, #0c002d, #060014

## Harmonies

- Complementary: #c1fd1c
- Analogous: #1c50fd, #c81cfd
- Triadic: #fd581c, #1cfd58
- Split-complementary: #fdc81c, #50fd1c
- Tetradic: #fd1c50, #c1fd1c, #1cfdc8

## Colors that go with #581cfd

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 #581cfd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Zoom (https://brandsweets.com/colors/brands/zoom-us), HP (https://brandsweets.com/colors/brands/hp-com), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [harmony, pool: analogous] — Denim is #581cfd'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), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/denim
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #581cfd: 10 real palettes, including Zillow's brand system and NHL's brand system, as the supporting colour. Seen in: Zillow (https://brandsweets.com/colors/brands/zillow-com), NHL (https://brandsweets.com/colors/brands/nhl-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Oreo (https://brandsweets.com/colors/brands/oreo-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #581cfd: 5 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
- **Crimson** #dc143c [pool] — Crimson is paired with #581cfd in 8 real palettes, including Coinbase's brand system and Toyota's brand system. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Toyota (https://brandsweets.com/colors/brands/toyota-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #581cfd: 4 real palettes, including Warp's brand system and Render's brand system, as the lead colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Render (https://brandsweets.com/colors/brands/render-com), Kraken (https://brandsweets.com/colors/brands/kraken-com), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #581cfd: 6 real palettes, including Unity's brand system and OnePlus's brand system, as the lead colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), OnePlus (https://brandsweets.com/colors/brands/oneplus-com), Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/dodgerblue
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #581cfd in 5 real palettes, including Indigo SaaS and Unity's brand system, as the accent. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Unity (https://brandsweets.com/colors/brands/unity-com), Spotify (https://brandsweets.com/colors/brands/spotify), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 7:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 3:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8153fd (4.59:1); AA: background → #d1d1d1 (4.58:1); AAA: text → #a281fe (7.11:1); AAA: background → #ffffff (7:1)

## Brands using this color

- **Prepare your taste buds...** — accent #572af8 (Δ 1.306) — https://brandsweets.com/colors/brands/grubhub-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/581cfd-ab9cc4-dfbf4e-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: "#581cfd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.