Color
#43005b
#43005brgb(67, 0, 91)hsl(284, 100%, 18%)oklch(0.289 0.143 313.6)Colors that go with #43005b
Denim, Midnight Blue 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.
Denim #1560bd
shippedDesigners have shipped Denim with #43005b: 4 real palettes, including Discover's brand system and Heinz's brand system, as the supporting colour.
Midnight Blue #191970
shipped4 real palettes, including Visa's brand system and Crest's brand system put Midnight Blue beside #43005b, as the lead colour.
Forest Green #228b22
complementaryForest Green sits directly opposite #43005b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #43005b: softer than #000 and cool enough to feel like part of the same palette.
Slate Blue #6a5acd
analogousshippedSlate Blue is #43005b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Taupe #483c32
shippedTaupe is paired with #43005b in 3 real palettes, including American Eagle's brand system and Gillette's brand system, as the lead colour.
Sea Green #2e8b57
split-complementSea Green is a split-complement of #43005b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Olive Green #808000
split-complementOlive Green is a split-complement of #43005b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #43005b
Tints & shades
Harmonies
Contrast
| #43005b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.11:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.39:1 | 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 #43005b as the background.
Brands using this color
Fonts for this mood
#43005b 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 #43005b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/43005b-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