# #a31971

A color — warm, vivid, playful, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#a31971`
- RGB: rgb(163, 25, 113)
- HSL: hsl(322, 73%, 37%)
- OKLCH: oklch(0.484 0.187 347.9)
- Relative luminance: 0.0967
- Nearest named color: Fabric of Love (#aa1177, Δ 1.703) — https://brandsweets.com/colors/fabric-of-love
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/a31971

## Tints & shades

- Tints (toward white): #be1e83, #d82295, #e038a3, #e453af, #e972bd, #ed8cca, #f1a7d6, #f5c1e2, #f9dcef, #fef6fb
- Shades (toward black): #961768, #84155b, #771352, #6a1149, #5d0e40, #4b0c34, #3e0a2b, #310822, #1f0515, #12030c

## Harmonies

- Complementary: #19a34c
- Analogous: #9119a3, #a3192c
- Triadic: #71a319, #1971a3
- Split-complementary: #2ca319, #19a391
- Tetradic: #a39119, #19a34c, #192ca3

## Colors that go with #a31971

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

- **Denim** #1560bd [pool] — Designers have shipped Denim with #a31971: 5 real palettes, including Chase's brand system and Ulta Beauty's brand system, as the lead colour. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com), Peacock (https://brandsweets.com/palettes/vivid#peacock), Nissan (https://brandsweets.com/colors/brands/nissanusa-com). — https://brandsweets.com/colors/denim
- **Sea Green** #2e8b57 [harmony: complementary] — Sea Green sits directly opposite #a31971 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/seagreen
- **Forest Green** #228b22 [harmony, pool: split] — Forest Green is a split-complement of #a31971: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Bun (https://brandsweets.com/colors/brands/bun-sh). — https://brandsweets.com/colors/forestgreen
- **Crimson** #dc143c [harmony, pool: analogous] — Crimson is #a31971's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com). — https://brandsweets.com/colors/crimson
- **Taupe** #483c32 [pool] — Taupe is paired with #a31971 in 3 real palettes, including Dunkin''s brand system and Tommy Hilfiger's brand system, as the lead colour. Seen in: Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tommy Hilfiger (https://brandsweets.com/colors/brands/tommy-com), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/taupe
- **Teal** #008080 [harmony: split] — Teal is a split-complement of #a31971: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/teal
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #a31971: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Midnight Blue** #191970 [pool] — Two real palettes: MLB's brand system and Nintendo's brand system put Midnight Blue beside #a31971, as the lead colour. Seen in: MLB (https://brandsweets.com/colors/brands/mlb-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com). — https://brandsweets.com/colors/midnightblue

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

- On white (#ffffff): 7.16:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.93:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #d82295 (4.58:1); AA: background → #cfcfcf (4.59:1); AAA: text → #e869b9 (7.15:1); AAA: background → #ffffff (7.16:1)

## Brands using this color

- **Rippling** — secondary #9f1e7a (Δ 1.678) — https://brandsweets.com/colors/brands/rippling-com

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- playful: https://brandsweets.com/fonts/mood/playful
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/a31971-c19fb1-6ecb62-2d1f22-f0e9f1?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: "#a31971" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.