# #a31aff

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

## Values

- Hex: `#a31aff`
- RGB: rgb(163, 26, 255)
- HSL: hsl(276, 100%, 55%)
- OKLCH: oklch(0.579 0.29 304.5)
- Relative luminance: 0.1575
- Nearest named color: Cosmic Heart (#9601f4, Δ 3.356) — https://brandsweets.com/colors/cosmic-heart
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/a31aff

## Tints & shades

- Tints (toward white): #ab2eff, #b647ff, #be5cff, #c670ff, #d08aff, #d89eff, #e0b3ff, #e9c7ff, #f3e0ff, #fbf5ff
- Shades (toward black): #9900ff, #8a00e6, #7a00cc, #6b00b3, #5c0099, #49007a, #3a0061, #2b0047, #1c002e, #0c0014

## Harmonies

- Complementary: #75ff1a
- Analogous: #301aff, #ff1ae8
- Triadic: #ffa31a, #1affa3
- Split-complementary: #e8ff1a, #1aff30
- Tetradic: #ff301a, #75ff1a, #1ae8ff

## Colors that go with #a31aff

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

- **Olive Drab** #6b8e23 [harmony: complementary] — Olive Drab sits directly opposite #a31aff 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/olivedrab
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #a31aff: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #a31aff'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), Loom (https://brandsweets.com/colors/brands/loom-com). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #a31aff: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/seagreen
- **Olive Green** #808000 [harmony: split] — Olive Green is a split-complement of #a31aff: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/olive
- **Denim** #1560bd [pool] — Designers have shipped Denim with #a31aff: two real palettes: Linkedin's brand system and Hasbro's brand system, as the lead colour. Seen in: Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/denim
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #a31aff in two real palettes: Taco Bell's brand system and Circuit, as the accent. Seen in: Taco Bell (https://brandsweets.com/colors/brands/tacobell-com), Circuit (https://brandsweets.com/palettes/technical#circuit). — https://brandsweets.com/colors/lightseagreen
- **Medium Slate Blue** #7b68ee [pool] — Medium Slate Blue shows up next to #a31aff in two real palettes: monday.com's brand system and ClickUp's brand system, as the lead colour. Seen in: monday.com (https://brandsweets.com/colors/brands/monday-com), ClickUp (https://brandsweets.com/colors/brands/clickup-com). — https://brandsweets.com/colors/mediumslateblue

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

- On white (#ffffff): 5.06:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8100d6 (7.23:1)
- On black (#000000): 4.15:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #ab2eff (4.57:1); AA: background → #f2f2f2 (4.52:1); AAA: text → #c670ff (7.16:1)

## Brands using this color

- **Taco Bell** — secondary #9a23f8 (Δ 1.948) — https://brandsweets.com/colors/brands/tacobell-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/a31aff-b99cc4-bfcb62-2d1f2d-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: "#a31aff" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.