Color
#400f52
#400f52rgb(64, 15, 82)hsl(284, 69%, 19%)oklch(0.289 0.119 315)Colors that go with #400f52
Charcoal, Blue and Cadet 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 #400f52: softer than #000 and cool enough to feel like part of the same palette.
Blue #0000ff
shipped6 real palettes, including Sketch's brand system and Monzo's brand system put Blue beside #400f52, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #400f52: 5 real palettes, including SoFi's brand system and Open House, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #400f52: 4 real palettes, including Blue Mono and MLB's brand system, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #400f52 in 9 real palettes, including Marvel's brand system and Casper Sleep's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #400f52: 16 real palettes, including Discover's brand system and Heinz's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #400f52: 8 real palettes, including MLB's brand system and Nintendo's brand system, as the supporting colour.
Forest Green #228b22
complementaryForest Green sits directly opposite #400f52 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #400f52
Tints & shades
Harmonies
Contrast
| #400f52 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.91:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.41:1 | 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 #400f52 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
#400f52 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 #400f52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/400f52-bc9fc1-b1cb62-2d1f2b-ebe9f1?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