# #603a69

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

## Values

- Hex: `#603a69`
- RGB: rgb(96, 58, 105)
- HSL: hsl(289, 29%, 32%)
- OKLCH: oklch(0.413 0.088 319.8)
- Relative luminance: 0.0653
- Nearest named color: Heartless (#623b70, Δ 1.224) — https://brandsweets.com/colors/heartless
- Moods: cool, muted
- Page: https://brandsweets.com/colors/603a69

## Tints & shades

- Tints (toward white): #764780, #885194, #9b61a8, #a875b3, #b68cc0, #c5a3cc, #d1b7d7, #e0cee4, #ece1ef, #fbf8fb
- Shades (toward black): #58355f, #4e2f56, #482b4f, #3f2645, #36213b, #2d1b31, #241627, #1e1221, #150d17, #0c070d

## Harmonies

- Complementary: #43693a
- Analogous: #493a69, #693a5a
- Triadic: #69613a, #3a6961
- Split-complementary: #5a693a, #3a6949
- Tetradic: #69493a, #43693a, #3a5a69

## Colors that go with #603a69

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

- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #603a69 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/seagreen
- **Crimson** #dc143c [pool] — Crimson is paired with #603a69 in 8 real palettes, including Lenovo's brand system and Wells Fargo's brand system, as the supporting colour. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-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 #603a69: 5 real palettes, including Hinge's brand system and HP's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), HP (https://brandsweets.com/colors/brands/hp-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Microsoft's brand system and First Snow put Midnight Blue beside #603a69, as the accent. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #603a69: 5 real palettes, including First Snow and Macaron, as the accent. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery), Stone (https://brandsweets.com/palettes/neutral#stone). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #603a69 in 6 real palettes, including Console Light and Zoom's brand system, as the lead colour. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Zoom (https://brandsweets.com/colors/brands/zoom-us), Stripe (https://brandsweets.com/colors/brands/stripe), GitHub (https://brandsweets.com/colors/brands/github). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #603a69: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/teal
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #603a69: 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): 9.1:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.31:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #995ea6 (4.51:1); AA: background → #b8b8b8 (4.59:1); AAA: text → #b489be (7.26:1); AAA: background → #e3e3e3 (7.09:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/603a69-be9fc1-a8cb62-2d1f2a-ece9f1?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: "#603a69" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.