# #837bdb

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

## Values

- Hex: `#837bdb`
- RGB: rgb(131, 123, 219)
- HSL: hsl(245, 57%, 67%)
- OKLCH: oklch(0.633 0.141 285.4)
- Relative luminance: 0.2411
- Nearest named color: mediumpurple (#9370db, Δ 3.427) — https://brandsweets.com/colors/mediumpurple
- Moods: cool, modern
- Page: https://brandsweets.com/colors/837bdb

## Tints & shades

- Tints (toward white): #8e87de, #9993e1, #a59fe5, #b0abe8, #bfbbec, #cac7f0, #d6d3f3, #e1dff6, #ecebfa, #f7f7fd
- Shades (toward black): #6c63d4, #5247cd, #4035c0, #382ea8, #302790, #272074, #1f195c, #171344, #0d0b28, #050410

## Harmonies

- Complementary: #d3db7b
- Analogous: #7ba3db, #b37bdb
- Triadic: #db837b, #7bdb83
- Split-complementary: #dbb37b, #a3db7b
- Tetradic: #db7ba3, #d3db7b, #7bdbb3

## Colors that go with #837bdb

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 #837bdb: 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 #837bdb in 5 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Google (https://brandsweets.com/colors/brands/google-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #837bdb, 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
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #837bdb: 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), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #837bdb: 11 real palettes, including Coursera's brand system and Apple's brand system, as the accent. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Apple (https://brandsweets.com/colors/brands/apple-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #837bdb in 4 real palettes, including Ledger Dark and Disney's brand system, as the lead colour. Seen in: Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Disney (https://brandsweets.com/colors/brands/disney-com), Chevrolet (https://brandsweets.com/colors/brands/chevrolet-com), Liquid Death (https://brandsweets.com/colors/brands/liquiddeath-com). — https://brandsweets.com/colors/goldenrod
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #837bdb in 4 real palettes, including Spotify's brand system and Unity's brand system, as the lead colour. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Olympics (https://brandsweets.com/colors/brands/olympics-com), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/mediumseagreen
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #837bdb 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): 3.61:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #7067d5 (4.58:1); AA: background → #1f1f1f (4.57:1); AAA: text → #4e43cb (7.03:1)
- On black (#000000): 5.82:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #968fe0 (7.3:1)

## 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/837bdb-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: "#837bdb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.