# #673d7f

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

## Values

- Hex: `#673d7f`
- RGB: rgb(103, 61, 127)
- HSL: hsl(278, 35%, 37%)
- OKLCH: oklch(0.439 0.113 312)
- Relative luminance: 0.0775
- Nearest named color: Lords of the Night (#664488, Δ 2.071) — https://brandsweets.com/colors/lords-of-the-night
- Moods: cool, modern
- Page: https://brandsweets.com/colors/673d7f

## Tints & shades

- Tints (toward white): #784794, #8951a9, #9764b4, #a579be, #b591ca, #c3a5d4, #d1bade, #dfcfe8, #ede3f2, #faf8fc
- Shades (toward black): #5f3875, #543267, #4b2d5d, #432853, #3b2348, #2f1c3b, #271730, #1f1226, #140c18, #0b070e

## Harmonies

- Complementary: #567f3d
- Analogous: #463d7f, #7f3d77
- Triadic: #7f673d, #3d7f67
- Split-complementary: #777f3d, #3d7f46
- Tetradic: #7f463d, #567f3d, #3d777f

## Colors that go with #673d7f

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 #673d7f: 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). — https://brandsweets.com/colors/charcoal
- **Midnight Blue** #191970 [pool] — 5 real palettes, including First Snow and Microsoft's brand system put Midnight Blue beside #673d7f, as that palette's text colour. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Kraken (https://brandsweets.com/colors/brands/kraken-com). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #673d7f in 4 real palettes, including Wayfair's brand system and Console Light, as the supporting colour. Seen in: Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Console Light (https://brandsweets.com/palettes/technical#console-light), Stripe (https://brandsweets.com/colors/brands/stripe), GitHub (https://brandsweets.com/colors/brands/github). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #673d7f in 5 real palettes, including Datadog's brand system and Dusk, as that palette's text colour. Seen in: Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Dusk (https://brandsweets.com/palettes/cool#dusk), Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/taupe
- **Dark Olive Green** #556b2f [harmony: complementary] — Dark Olive Green sits directly opposite #673d7f 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
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #673d7f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/teal
- **Crimson** #dc143c [pool] — Crimson is paired with #673d7f in 3 real palettes, including Wells Fargo's brand system and Lenovo's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #673d7f: 3 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). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 8.23:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.55:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #9561b3 (4.64:1); AA: background → #c2c2c2 (4.62:1); AAA: text → #ae87c5 (7.07:1); AAA: background → #ededed (7.03:1)

## 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/673d7f-ba9cc4-bbcb62-2d1f2c-ebe9f1?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: "#673d7f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.