Named color
Coal Mine
#220033rgb(34, 0, 51)hsl(280, 100%, 10%)oklch(0.193 0.097 311.2)Coal Mine on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the curated palettes it appears in and any public brand that adopts it.
Colors that go with Coal Mine
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 Coal Mine: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of Coal Mine: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
triadicshippedSienna completes a triad with Coal Mine — 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 Coal Mine'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 Coal Mine — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Forest Green #228b22
complementaryshippedForest Green sits directly opposite Coal Mine on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with Coal Mine in 15 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent.
Blue #0000ff
shipped17 real palettes, including Penpot's brand system and Warp's brand system put Blue beside Coal Mine, as the supporting colour.
Real palettes that use Coal Mine
Tints & shades
Harmonies
Contrast
| Coal Mine as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 18.82:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.12:1 | 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 Coal Mine 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
Coal Mine 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 #220033 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/220033-b99fc1-b8cb62-2d1f2c-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