Color
#400a67
#400a67rgb(64, 10, 103)hsl(275, 82%, 22%)oklch(0.303 0.145 304.6)Colors that go with #400a67
Charcoal, Crimson and Denim 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 #400a67: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #400a67 in 4 real palettes, including Casper Sleep's brand system and Marvel's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #400a67 in 4 real palettes, including Bank of America's brand system and Discover's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
analogousshippedRoyal Blue is #400a67's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Olive Green #808000
complementaryOlive Green sits directly opposite #400a67 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sea Green #2e8b57
split-complementSea Green is a split-complement of #400a67: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cobalt Blue #0047ab
shippedCobalt Blue is paired with #400a67 in two real palettes: Blue Mono and Purina Pro Plan's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Cornflower Blue #6495ed
shippedCornflower Blue is paired with #400a67 in two real palettes: Peacock's brand system and Blue Mono, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #400a67
Tints & shades
Harmonies
Contrast
| #400a67 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.41:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.46:1 | 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 #400a67 as the background.
Brands using this color
Fonts for this mood
#400a67 reads as cool, vivid, dark. 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 #400a67 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/400a67-b89cc4-c0cb62-2d1f2d-eae9f1?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