# #837cd0

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

## Values

- Hex: `#837cd0`
- RGB: rgb(131, 124, 208)
- HSL: hsl(245, 47%, 65%)
- OKLCH: oklch(0.628 0.124 286)
- Relative luminance: 0.2379
- Nearest named color: mediumpurple (#9370db, Δ 4.254) — https://brandsweets.com/colors/mediumpurple
- Moods: cool, modern
- Page: https://brandsweets.com/colors/837cd0

## Tints & shades

- Tints (toward white): #8d87d4, #9c96d9, #a6a1dd, #b1ade1, #bfbce7, #cac7eb, #d4d2ef, #dfddf3, #edecf8, #f8f8fc
- Shades (toward black): #6e65c8, #584fbf, #4940b0, #40379a, #362f83, #2b2669, #221e52, #19163c, #100e25, #06050f

## Harmonies

- Complementary: #c9d07c
- Analogous: #7c9fd0, #ad7cd0
- Triadic: #d0837c, #7cd083
- Split-complementary: #d0ad7c, #9fd07c
- Tetradic: #d07c9f, #c9d07c, #7cd0ad

## Colors that go with #837cd0

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 #837cd0: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #837cd0 in 7 real palettes, including Blueprint and Mastodon hosted on mastodon.social's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Google (https://brandsweets.com/colors/brands/google-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 5 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #837cd0, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #837cd0 in 4 real palettes, including Marvel's brand system and Retro Pop, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #837cd0: 7 real palettes, including Blueprint and Calm's brand system, as the lead colour. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Calm (https://brandsweets.com/colors/brands/calm-com), Telegram (https://brandsweets.com/colors/brands/telegram-org), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #837cd0: 14 real palettes, including Dusk and Coursera's brand system, as the lead colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Coursera (https://brandsweets.com/colors/brands/coursera-org), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/denim
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #837cd0 in 4 real palettes, including Olympics's brand system and Spotify's brand system, as the accent. Seen in: Olympics (https://brandsweets.com/colors/brands/olympics-com), Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/mediumseagreen
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #837cd0 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/olive

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

- On white (#ffffff): 3.65:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #7169c9 (4.6:1); AA: background → #1f1f1f (4.52:1); AAA: text → #5147bd (7.03:1)
- On black (#000000): 5.76:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #958fd6 (7.18:1)

## 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/837cd0-a49cc4-dfa54e-261f2d-e9ecf1?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: "#837cd0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.