Color
#031b1a
#031b1argb(3, 27, 26)hsl(178, 80%, 6%)oklch(0.203 0.031 191.3)Colors that go with #031b1a
Charcoal, Crimson and Rust 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 #031b1a: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
complementaryshippedCrimson sits directly opposite #031b1a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Rust #b7410e
split-complementshippedRust is a split-complement of #031b1a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sea Green #2e8b57
analogousshippedSea Green is #031b1a's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
triadicshippedSienna completes a triad with #031b1a — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
analogousshippedTeal is #031b1a'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 #031b1a in 18 real palettes, including Warner Bros.'s brand system and Lemon Squeezy's brand system, as the accent.
Blue #0000ff
shipped24 real palettes, including MongoDB's brand system and Monzo's brand system put Blue beside #031b1a, as the accent.
Real palettes that use #031b1a
Tints & shades
Harmonies
Contrast
| #031b1a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 17.86:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.18:1 | 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 #031b1a as the background.
Brands using this color
Fonts for this mood
#031b1a reads as vivid, 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 #031b1a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/031b1a-a2bcbe-d45999-1f282d-e9f1ed?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