Color
#400b42
#400b42rgb(64, 11, 66)hsl(298, 71%, 15%)oklch(0.272 0.108 326.4)Colors that go with #400b42
Charcoal, Teal and Forest Green 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 #400b42: softer than #000 and cool enough to feel like part of the same palette.
Teal #008080
split-complementshippedTeal is a split-complement of #400b42: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Forest Green #228b22
complementaryshippedForest Green sits directly opposite #400b42 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #400b42 in 6 real palettes, including Southwest Airlines's brand system and Beach Hut, as the accent.
Blue #0000ff
shipped11 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #400b42, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #400b42: 9 real palettes, including SoFi's brand system and Dusk, as the supporting colour.
Champagne #f7e7ce
shipped5 real palettes, including Allbirds's brand system and Darkroom put Champagne beside #400b42, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #400b42: 9 real palettes, including Blue Mono and Hershey's's brand system, as the lead colour.
Real palettes that use #400b42
Tints & shades
Harmonies
Contrast
| #400b42 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.62:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.34:1 | 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 #400b42 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
#400b42 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 #400b42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/400b42-c19fbe-98cb62-2d1f28-ede9f1?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