Color
#673cc3
#673cc3rgb(103, 60, 195)hsl(259, 53%, 50%)oklch(0.487 0.198 292)Colors that go with #673cc3
Charcoal, Royal Blue and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #673cc3: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
analogousshippedRoyal Blue is #673cc3's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Amber #ffbf00
shippedAmber is paired with #673cc3 in 4 real palettes, including Warner Bros.'s brand system and Wikipedia's brand system, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #673cc3: 5 real palettes, including Coca-Cola's brand system and Blue Mono, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #673cc3 in 6 real palettes, including Gemstone and Netflix's brand system, as the accent.
Medium Slate Blue #7b68ee
shippedMedium Slate Blue shows up next to #673cc3 in 4 real palettes, including ClickUp's brand system and Stripe's brand system, as the supporting colour.
Midnight Blue #191970
shipped7 real palettes, including Kraken's brand system and Paramount+'s brand system put Midnight Blue beside #673cc3, as the lead colour.
Orange Red #ff4500
shippedOrange Red is paired with #673cc3 in 4 real palettes, including Prepare your taste buds...'s brand system and Clerk's brand system, as the lead colour.
Real palettes that use #673cc3
Tints & shades
Harmonies
Contrast
| #673cc3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.97:1 | pass | pass | fail |
|
Aaon black | 3.01:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #673cc3 as the background.
Brands using this color
Fonts for this mood
#673cc3 reads as cool, modern. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #673cc3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/673cc3-ad9cc4-dfc74e-2a1f2d-e9ebf1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md