# #423965

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

## Values

- Hex: `#423965`
- RGB: rgb(66, 57, 101)
- HSL: hsl(252, 28%, 31%)
- OKLCH: oklch(0.375 0.074 291.8)
- Relative luminance: 0.0502
- Nearest named color: Her Highness (#432e6f, Δ 3.723) — https://brandsweets.com/colors/her-highness
- Moods: cool, muted
- Page: https://brandsweets.com/colors/423965

## Tints & shades

- Tints (toward white): #51467c, #5d5190, #6d5fa5, #8276b2, #978dbf, #a9a0ca, #bdb7d7, #d2cee3, #e4e2ee, #f9f8fb
- Shades (toward black): #3b335b, #373055, #312a4b, #2a2541, #26213b, #201c31, #191627, #13111d, #0f0d17, #08070d

## Harmonies

- Complementary: #5c6539
- Analogous: #394665, #583965
- Triadic: #654239, #396542
- Split-complementary: #655839, #466539
- Tetradic: #653946, #5c6539, #396558

## Colors that go with #423965

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

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #423965's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #423965 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Gusto (https://brandsweets.com/colors/brands/gusto-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/teal
- **Blue** #0000ff [pool] — 8 real palettes, including Alaska Airlines's brand system and Dunkin''s brand system put Blue beside #423965, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 4 real palettes, including Nursery and Garden Wedding put Blush Pink beside #423965, as the lead colour. Seen in: Nursery (https://brandsweets.com/palettes/light#nursery), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Blush (https://brandsweets.com/palettes/light#blush), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden). — https://brandsweets.com/colors/blush-pink
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #423965: 4 real palettes, including Open House and Coastal, as the supporting colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Coastal (https://brandsweets.com/palettes/cool#coastal), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #423965: 4 real palettes, including Notion's brand system and Bramble. Seen in: Notion (https://brandsweets.com/colors/brands/notion), Bramble (https://brandsweets.com/palettes/muted#bramble), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #423965 in 9 real palettes, including Marvel's brand system and Frost & Ember, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/crimson
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #423965: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 10.47:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #796cac (4.55:1); AA: background → #ababab (4.56:1); AAA: text → #9a90c1 (7.13:1); AAA: background → #d4d4d4 (7.07:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/423965-a99cc4-dfb64e-281f2d-e9ecf1?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: "#423965" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.