Color
#400fb3
#400fb3rgb(64, 15, 179)hsl(258, 85%, 38%)oklch(0.388 0.22 282.5)Colors that go with #400fb3
Charcoal, Denim and Blue 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 #400fb3: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
analogousshippedDenim is #400fb3's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped4 real palettes, including Zillow's brand system and Procter & Gamble's brand system put Blue beside #400fb3, as the lead colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #400fb3: 5 real palettes, including Peacock's brand system and Blue Mono, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #400fb3: 4 real palettes, including Absolut's brand system and Cargo's brand system, as the supporting colour.
Midnight Blue #191970
shipped6 real palettes, including Kraken's brand system and Blue Mono put Midnight Blue beside #400fb3, as the lead colour.
Orange Red #ff4500
shippedOrange Red is paired with #400fb3 in 5 real palettes, including Tide's brand system and Intercom's brand system, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #400fb3 in 9 real palettes, including Nivea's brand system and NHL's brand system, as the supporting colour.
Real palettes that use #400fb3
Tints & shades
Harmonies
Contrast
| #400fb3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 10.84:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.94:1 | 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 #400fb3 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#400fb3 reads as cool, vivid, technical. 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 #400fb3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/400fb3-ad9cc4-dfc44e-291f2d-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