# #6311d0

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

## Values

- Hex: `#6311d0`
- RGB: rgb(99, 17, 208)
- HSL: hsl(266, 85%, 44%)
- OKLCH: oklch(0.456 0.246 291.8)
- Relative luminance: 0.0761
- Nearest named color: Blurple (#5539cc, Δ 5.021) — https://brandsweets.com/colors/blurple
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/6311d0

## Tints & shades

- Tints (toward white): #6f13e7, #7f2bee, #8d42f0, #9e5ff2, #ad76f4, #bb8ef6, #ccaaf8, #dac2fa, #ebdefc, #f9f6fe
- Shades (toward black): #5a0fbd, #510eaa, #480c97, #3f0b84, #360971, #2d085e, #24064b, #1b0539, #120326, #090213

## Harmonies

- Complementary: #7dd011
- Analogous: #111ed0, #c311d0
- Triadic: #d06311, #11d063
- Split-complementary: #d0c311, #1ed011
- Tetradic: #d0111e, #7dd011, #11d0c3

## Colors that go with #6311d0

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 #6311d0: 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), Campus (https://brandsweets.com/palettes/friendly#campus), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #6311d0's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/royalblue
- **Tomato** #ff6347 [pool] — 4 real palettes, including GitLab's brand system and dbt Labs's brand system put Tomato beside #6311d0, as the lead colour. Seen in: GitLab (https://brandsweets.com/colors/brands/gitlab), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Etsy (https://brandsweets.com/colors/brands/etsy-com), FedEx (https://brandsweets.com/colors/brands/fedex-com). — https://brandsweets.com/colors/tomato
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #6311d0 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
- **Crimson** #dc143c [pool] — Crimson is paired with #6311d0 in 3 real palettes, including Gemstone and Wells Fargo's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #6311d0: 3 real palettes, including Linkedin's brand system and Unilever's brand system, as the lead colour. Seen in: Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Slack (https://brandsweets.com/colors/brands/slack-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 3 real palettes, including Kraken's brand system and Purina Pro Plan's brand system put Midnight Blue beside #6311d0, as the lead colour. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/midnightblue
- **Slate Gray** #708090 [pool] — 3 real palettes, including Indigo SaaS and Campus put Slate Gray beside #6311d0, as the supporting colour. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Campus (https://brandsweets.com/palettes/friendly#campus), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper). — https://brandsweets.com/colors/slategray

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

- On white (#ffffff): 8.33:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.52:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #934cf0 (4.53:1); AA: background → #bfbfbf (4.53:1); AAA: text → #b280f5 (7.3:1); AAA: background → #ededed (7.11:1)

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/6311d0-b29cc4-dfd74e-2b1f2d-e9eaf1?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: "#6311d0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.