# #901ff9

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

## Values

- Hex: `#901ff9`
- RGB: rgb(144, 31, 249)
- HSL: hsl(271, 95%, 55%)
- OKLCH: oklch(0.553 0.28 299.5)
- Relative luminance: 0.1375
- Nearest named color: Cosmic Heart (#9601f4, Δ 2.042) — https://brandsweets.com/colors/cosmic-heart
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/901ff9

## Tints & shades

- Tints (toward white): #9a33fa, #a64cfa, #b060fb, #ba74fb, #c68dfc, #d0a1fd, #dab4fd, #e4c8fe, #f0e1fe, #faf5ff
- Shades (toward black): #8406f9, #7606e0, #6905c7, #5c04ae, #4f0495, #3f0377, #32025e, #250246, #18012d, #0b0114

## Harmonies

- Complementary: #89f91f
- Analogous: #231ff9, #f91ff6
- Triadic: #f9901f, #1ff990
- Split-complementary: #f6f91f, #1ff923
- Tetradic: #f9231f, #89f91f, #1ff6f9

## Colors that go with #901ff9

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 #901ff9 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
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #901ff9'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), Stripe (https://brandsweets.com/colors/brands/stripe). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #901ff9 — 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), Stripe (https://brandsweets.com/colors/brands/stripe). — https://brandsweets.com/colors/teal
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #901ff9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/seagreen
- **Charcoal** #36454f [role] — Charcoal is the text near-black for #901ff9: softer than #000 and cool enough to feel like part of the same palette. — https://brandsweets.com/colors/charcoal
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #901ff9 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 #901ff9 in two real palettes: ClickUp's brand system and monday.com's brand system, as the supporting colour. Seen in: ClickUp (https://brandsweets.com/colors/brands/clickup-com), monday.com (https://brandsweets.com/colors/brands/monday-com). — https://brandsweets.com/colors/mediumslateblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #901ff9 in two real palettes: Clerk's brand system and Prepare your taste buds...'s brand system, as the supporting colour. Seen in: Clerk (https://brandsweets.com/colors/brands/clerk-com), Prepare your taste buds... (https://brandsweets.com/colors/brands/grubhub-com). — https://brandsweets.com/colors/orangered

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

- On white (#ffffff): 5.6:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #7906e5 (7.07:1)
- On black (#000000): 3.75:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #9f3dfa (4.52:1); AA: background → #e8e8e8 (4.57:1); AAA: text → #bc79fc (7.28:1)

## 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/901ff9-b59cc4-c7cb62-2c1f2d-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: "#901ff9" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.