Color
#040fa9
#040fa9rgb(4, 15, 169)hsl(236, 95%, 34%)oklch(0.342 0.223 264.8)Colors that go with #040fa9
Charcoal, Crimson and Cobalt 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 #040fa9: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #040fa9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #040fa9: 6 real palettes, including Tide's brand system and Purina Pro Plan's brand system, as the lead colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #040fa9: 4 real palettes, including Blue Mono and Peacock's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #040fa9: 5 real palettes, including Unilever's brand system and Warbyparker's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #040fa9: 4 real palettes, including Absolut's brand system and Cargo's brand system, as the supporting colour.
Orange Red #ff4500
shippedOrange Red is paired with #040fa9 in 6 real palettes, including Tide's brand system and Intercom's brand system, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #040fa9 in 9 real palettes, including Nivea's brand system and Discord's brand system, as the supporting colour.
Real palettes that use #040fa9
Tints & shades
Harmonies
Contrast
| #040fa9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.76:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.65:1 | 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 #040fa9 as the background.
Brands using this color
Fonts for this mood
#040fa9 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 #040fa9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/040fa9-9e9cc4-df8f4e-241f2d-e9eef1?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