# #623f88

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

## Values

- Hex: `#623f88`
- RGB: rgb(98, 63, 136)
- HSL: hsl(269, 37%, 39%)
- OKLCH: oklch(0.442 0.12 304.1)
- Relative luminance: 0.0793
- Nearest named color: Lords of the Night (#664488, Δ 1.545) — https://brandsweets.com/colors/lords-of-the-night
- Moods: cool, modern
- Page: https://brandsweets.com/colors/623f88

## Tints & shades

- Tints (toward white): #71489d, #8154b0, #9069ba, #9f7ec4, #af93cd, #bca4d5, #cbb9df, #dbcee9, #eae3f2, #faf8fc
- Shades (toward black): #5b3a7e, #513370, #492f65, #3f2857, #37234d, #2d1d3f, #261834, #1c1226, #140d1c, #0a060e

## Harmonies

- Complementary: #65883f
- Analogous: #3f4088, #873f88
- Triadic: #88623f, #3f8862
- Split-complementary: #88873f, #40883f
- Tetradic: #883f40, #65883f, #3f8887

## Colors that go with #623f88

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 #623f88: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Harbour (https://brandsweets.com/palettes/cool#harbour), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [pool] — Designers have shipped Denim with #623f88: 6 real palettes, including Hinge's brand system and HP's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), HP (https://brandsweets.com/colors/brands/hp-com), Slack (https://brandsweets.com/colors/brands/slack-com), Unilever (https://brandsweets.com/colors/brands/unilever-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 9 real palettes, including First Snow and Kraken's brand system put Midnight Blue beside #623f88, as that palette's text colour. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Kraken (https://brandsweets.com/colors/brands/kraken-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #623f88 in 8 real palettes, including Wayfair's brand system and Stripe's brand system, as the supporting colour. Seen in: Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Stripe (https://brandsweets.com/colors/brands/stripe), Console Light (https://brandsweets.com/palettes/technical#console-light), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #623f88 in 4 real palettes, including Datadog's brand system and Superhuman's brand system, as that palette's text colour. Seen in: Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Dusk (https://brandsweets.com/palettes/cool#dusk), GitHub (https://brandsweets.com/colors/brands/github). — https://brandsweets.com/colors/taupe
- **Tomato** #ff6347 [pool] — 6 real palettes, including Golden Hour and FedEx's brand system put Tomato beside #623f88, as the supporting colour. Seen in: Golden Hour (https://brandsweets.com/palettes/warm#golden-hour), FedEx (https://brandsweets.com/colors/brands/fedex-com), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com). — https://brandsweets.com/colors/tomato
- **Dark Olive Green** #556b2f [harmony: complementary] — Dark Olive Green sits directly opposite #623f88 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/darkolivegreen
- **Blue** #0000ff [pool] — 3 real palettes, including CVS's brand system and Tesco's brand system put Blue beside #623f88, as the supporting colour. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Zillow (https://brandsweets.com/colors/brands/zillow-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 8.12:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.59:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8b62b7 (4.53:1); AA: background → #c2c2c2 (4.56:1); AAA: text → #aa8cca (7.31:1); AAA: background → #f0f0f0 (7.13:1)

## 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/623f88-b49cc4-cbcb62-2c1f2d-e9e9f1?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: "#623f88" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.