Color
#431dcd
#431dcdrgb(67, 29, 205)hsl(253, 75%, 46%)oklch(0.43 0.24 279.1)Colors that go with #431dcd
Olive Green, Charcoal and Midnight 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.
Olive Green #808000
complementaryOlive Green sits directly opposite #431dcd 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 #431dcd: softer than #000 and cool enough to feel like part of the same palette.
Midnight Blue #191970
shippedMidnight Blue is paired with #431dcd in 3 real palettes, including Blue Mono and Monzo's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #431dcd in 3 real palettes, including Ink & Paper and Indigo SaaS, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Olive Drab #6b8e23
split-complementOlive Drab is a split-complement of #431dcd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
split-complementSienna is a split-complement of #431dcd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Dark Orchid #9932cc
analogousshippedDark Orchid is #431dcd's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #431dcd in two real palettes: Indigo SaaS and Fintech Trust, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #431dcd
Tints & shades
Harmonies
Contrast
| #431dcd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.15:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.3:1 | 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 #431dcd 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
#431dcd 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 #431dcd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/431dcd-a99cc4-dfb84e-281f2d-e9ebf1?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