Color
#02181c
#02181crgb(2, 24, 28)hsl(189, 87%, 6%)oklch(0.193 0.03 210.5)Colors that go with #02181c
Charcoal, Rust 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 #02181c: softer than #000 and cool enough to feel like part of the same palette.
Rust #b7410e
complementaryshippedRust sits directly opposite #02181c on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sienna #a0522d
split-complementshippedSienna is a split-complement of #02181c: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Steel Blue #4682b4
analogousshippedSteel Blue is #02181c's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Teal #008080
analogousshippedTeal is #02181c's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Amber #ffbf00
shippedAmber is paired with #02181c in 15 real palettes, including Lemon Squeezy's brand system and Ahrefs's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #02181c in 22 real palettes, including MongoDB's brand system and Kia's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue Violet #8a2be2
shippedBlue Violet is paired with #02181c in 10 real palettes, including Prepare your taste buds...'s brand system and Klarna US's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #02181c
Tints & shades
Harmonies
Contrast
| #02181c as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 18.26:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.15:1 | 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 #02181c as the background.
Brands using this color
Fonts for this mood
#02181c 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 #02181c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/02181c-a2b7be-df4e7e-1f252d-e9f1ee?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