# #583f9d

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

## Values

- Hex: `#583f9d`
- RGB: rgb(88, 63, 157)
- HSL: hsl(256, 43%, 43%)
- OKLCH: oklch(0.446 0.146 291.6)
- Relative luminance: 0.0806
- Nearest named color: Blueberry (#464196, Δ 3.22) — https://brandsweets.com/colors/blueberry
- Moods: cool, modern
- Page: https://brandsweets.com/colors/583f9d

## Tints & shades

- Tints (toward white): #6447b3, #7257bc, #856dc5, #947fcc, #a695d5, #b6a7dc, #c8bde5, #d7d0ec, #eae5f5, #f9f8fc
- Shades (toward black): #4f398e, #473380, #3f2d71, #372762, #312358, #291d49, #21173a, #18112c, #100c1d, #08060f

## Harmonies

- Complementary: #849d3f
- Analogous: #3f559d, #873f9d
- Triadic: #9d583f, #3f9d58
- Split-complementary: #9d873f, #559d3f
- Tetradic: #9d3f55, #849d3f, #3f9d87

## Colors that go with #583f9d

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 #583f9d: softer than #000 and cool enough to feel like part of the same palette. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #583f9d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #583f9d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/seagreen
- **Blue** #0000ff [pool] — 6 real palettes, including Zillow's brand system and CVS's brand system put Blue beside #583f9d, as the lead colour. Seen in: Zillow (https://brandsweets.com/colors/brands/zillow-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #583f9d: 4 real palettes, including Blue Mono and Coca-Cola's brand system, as the supporting colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Peacock (https://brandsweets.com/colors/brands/peacocktv-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #583f9d in 10 real palettes, including Wells Fargo's brand system and Walgreens's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Netflix (https://brandsweets.com/colors/brands/netflix), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #583f9d: 13 real palettes, including Warbyparker's brand system and Unilever's brand system, as the accent. Seen in: Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Slack (https://brandsweets.com/colors/brands/slack-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 17 real palettes, including Kraken's brand system and Blue Mono put Midnight Blue beside #583f9d, as the lead colour. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Panasonic (https://brandsweets.com/colors/brands/panasonic-com), First Snow (https://brandsweets.com/palettes/cool#first-snow). — https://brandsweets.com/colors/midnightblue

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

- On white (#ffffff): 8.04:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.61:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7e66c2 (4.57:1); AA: background → #c2c2c2 (4.51:1); AAA: text → #a08ed2 (7.29:1); AAA: background → #f0f0f0 (7.05:1)

## Brands using this color

- **Wells Fargo** — accent #5a469b (Δ 1.833) — https://brandsweets.com/colors/brands/wellsfargo-com

## Fonts for this mood

- 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/583f9d-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: "#583f9d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.