# #670bb7

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

## Values

- Hex: `#670bb7`
- RGB: rgb(103, 11, 183)
- HSL: hsl(272, 89%, 38%)
- OKLCH: oklch(0.433 0.226 299.3)
- Relative luminance: 0.0654
- Nearest named color: Fuchsia Nebula (#7722aa, Δ 4.767) — https://brandsweets.com/colors/fuchsia-nebula
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/670bb7

## Tints & shades

- Tints (toward white): #770cd4, #870ef1, #952bf3, #a448f4, #b265f6, #c182f8, #cf9ff9, #ddbcfb, #ecd8fd, #faf5fe
- Shades (toward black): #5f0aa9, #540995, #4c0887, #410774, #390665, #310557, #260443, #1e0335, #130222, #0b0113

## Harmonies

- Complementary: #5bb70b
- Analogous: #100bb7, #b70bb1
- Triadic: #b7670b, #0bb767
- Split-complementary: #b1b70b, #0bb710
- Tetradic: #b7100b, #5bb70b, #0bb1b7

## Colors that go with #670bb7

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #670bb7 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
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #670bb7: 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). — https://brandsweets.com/colors/charcoal
- **Tomato** #ff6347 [pool] — 3 real palettes, including FedEx's brand system and dbt Labs's brand system put Tomato beside #670bb7, as the supporting colour. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), GitLab (https://brandsweets.com/colors/brands/gitlab). — https://brandsweets.com/colors/tomato
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #670bb7 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #670bb7: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/seagreen
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #670bb7's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Wayfair (https://brandsweets.com/colors/brands/wayfair-com). — https://brandsweets.com/colors/royalblue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #670bb7 in two real palettes: Twitch's brand system and Taco Bell's brand system, as the lead colour. Seen in: Twitch (https://brandsweets.com/colors/brands/twitch-tv), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com). — https://brandsweets.com/colors/blueviolet
- **Crimson** #dc143c [pool] — Crimson is paired with #670bb7 in two real palettes: 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). — https://brandsweets.com/colors/crimson

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

- On white (#ffffff): 9.1:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.31:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #a143f4 (4.62:1); AA: background → #b8b8b8 (4.59:1); AAA: text → #bc78f7 (7.17:1); AAA: background → #e3e3e3 (7.09:1)

## Brands using this color

- **Zillow** — accent #6000b6 (Δ 1.686) — https://brandsweets.com/colors/brands/zillow-com

## 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/670bb7-b69cc4-c5cb62-2d1f2d-eae9f1?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: "#670bb7" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.