Color
#280a39
#280a39rgb(40, 10, 57)hsl(278, 70%, 13%)oklch(0.224 0.088 310.3)Colors that go with #280a39
Charcoal, Sea Green and Sienna 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 #280a39: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #280a39 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sienna #a0522d
triadicshippedSienna completes a triad with #280a39 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Slate Blue #6a5acd
analogousshippedSlate Blue is #280a39's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Teal #008080
triadicshippedTeal completes a triad with #280a39 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #280a39 in 15 real palettes, including Blueprint and Lemon Squeezy's brand system, as the accent.
Blue #0000ff
shipped21 real palettes, including Penpot's brand system and Sketch's brand system put Blue beside #280a39, as the supporting colour.
Blue Violet #8a2be2
shippedBlue Violet is paired with #280a39 in 10 real palettes, including Gemstone and Yahoo's brand system, as the supporting colour.
Real palettes that use #280a39
Tints & shades
Harmonies
Contrast
| #280a39 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 17.61:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.19:1 | 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 #280a39 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
#280a39 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 #280a39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/280a39-ba9cc4-bbcb62-2d1f2c-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