Color
#331d62
#331d62rgb(51, 29, 98)hsl(259, 54%, 25%)oklch(0.303 0.115 292.9)Colors that go with #331d62
Cadet Blue, Light Pink and Powder 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.
Cadet Blue #5f9ea0
shippedCadet Blue is paired with #331d62 in 5 real palettes, including Open House and Coastal, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Light Pink #ffb6c1
shippedLight Pink is paired with #331d62 in 4 real palettes, including Railway's brand system and Sorbet, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #331d62 in 5 real palettes, including Frost & Ember and First Snow, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Sky Blue #87ceeb
shippedSky Blue is paired with #331d62 in 5 real palettes, including Harbour and Coastal, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #331d62 in 4 real palettes, including Campus and Dusty Blue, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Steel Blue #4682b4
shippedSteel Blue is paired with #331d62 in 5 real palettes, including Plaid's brand system and Beach Hut, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #331d62 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 #331d62: softer than #000 and cool enough to feel like part of the same palette.
Real palettes that use #331d62
Tints & shades
Harmonies
Contrast
| #331d62 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.07:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.49:1 | 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 #331d62 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
#331d62 reads as cool, dark, luxury. 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 #331d62 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/331d62-ad9cc4-dfc74e-2a1f2d-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