Color
#504b9b
#504b9brgb(80, 75, 155)hsl(244, 35%, 45%)oklch(0.459 0.126 283.1)Colors that go with #504b9b
Charcoal, Steel 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 #504b9b: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
analogousshippedSteel Blue is #504b9b'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 #504b9b in 5 real palettes, including Warner Bros.'s brand system and McDonald's's brand system, as the accent.
Blue #0000ff
shipped6 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #504b9b, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #504b9b: 4 real palettes, including Coca-Cola's brand system and Blue Mono, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #504b9b in 12 real palettes, including Wells Fargo's brand system and Walgreens's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #504b9b: 4 real palettes, including Coursera's brand system and Apple's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #504b9b: 5 real palettes, including Datadog's brand system and Campbell's's brand system, as the accent.
Real palettes that use #504b9b
Tints & shades
Harmonies
Contrast
| #504b9b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.44:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.82:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #504b9b as the background.
Brands using this color
Fonts for this mood
#504b9b 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 #504b9b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/504b9b-a39cc4-dfa24e-261f2d-e9edf1?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