# #644d7a

A color — cool, muted. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#644d7a`
- RGB: rgb(100, 77, 122)
- HSL: hsl(271, 23%, 39%)
- OKLCH: oklch(0.463 0.076 307.1)
- Relative luminance: 0.0942
- Nearest named color: Freshly Purpleized (#5c5083, Δ 1.946) — https://brandsweets.com/colors/freshly-purpleized
- Moods: cool, muted
- Page: https://brandsweets.com/colors/644d7a

## Tints & shades

- Tints (toward white): #74588d, #83659f, #9278ab, #a18bb6, #b19ec2, #bdadcc, #ccc0d8, #dcd3e4, #ebe6ef, #faf9fb
- Shades (toward black): #5d4771, #523f64, #4b395b, #40314e, #392b45, #2e2338, #271d2f, #1c1623, #151019, #0a080d

## Harmonies

- Complementary: #637a4d
- Analogous: #4d4d7a, #7a4d7a
- Triadic: #7a644d, #4d7a64
- Split-complementary: #7a7a4d, #4d7a4d
- Tetradic: #7a4d4d, #637a4d, #4d7a7a

## Colors that go with #644d7a

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 #644d7a: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Hinge (https://brandsweets.com/colors/brands/hinge-co), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #644d7a in 6 real palettes, including Wells Fargo's brand system and Walgreens's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #644d7a: 11 real palettes, including HP's brand system and Hinge's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Dutch Bros (https://brandsweets.com/colors/brands/dutchbros-com). — https://brandsweets.com/colors/denim
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #644d7a in 4 real palettes, including Console Light and Fintech Trust, as the accent. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth). — https://brandsweets.com/colors/mediumseagreen
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Lufthansa's brand system and First Snow put Midnight Blue beside #644d7a, as the lead colour. Seen in: Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), FIFA (https://brandsweets.com/colors/brands/fifa-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #644d7a in 9 real palettes, including Stripe's brand system and Console Light, as the accent. Seen in: Stripe (https://brandsweets.com/colors/brands/stripe), Console Light (https://brandsweets.com/palettes/technical#console-light), GitHub (https://brandsweets.com/colors/brands/github), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/royalblue
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #644d7a: 4 real palettes, including Darkroom and Oatmeal, as the supporting colour. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), Graphite (https://brandsweets.com/palettes/technical#graphite), Stone (https://brandsweets.com/palettes/neutral#stone). — https://brandsweets.com/colors/sage-green
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #644d7a — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Clinic (https://brandsweets.com/palettes/clean#clinic), Stanley (https://brandsweets.com/colors/brands/stanley1913-com). — https://brandsweets.com/colors/teal

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

- On white (#ffffff): 7.28:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.88:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8668a1 (4.51:1); AA: background → #cccccc (4.53:1); AAA: text → #a48eb8 (7.14:1); AAA: background → #fcfcfc (7.1:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/644d7a-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: "#644d7a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.