Color
#370d40
#370d40rgb(55, 13, 64)hsl(289, 66%, 15%)oklch(0.258 0.098 320)Colors that go with #370d40
Charcoal, Sienna and Slate 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #370d40: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
triadicshippedSienna completes a triad with #370d40 — 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 #370d40's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Teal #008080
split-complementshippedTeal is a split-complement of #370d40: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #370d40 in 7 real palettes, including Blueprint and Beach Hut, as the accent.
Blue #0000ff
shipped13 real palettes, including Sketch's brand system and Monzo's brand system put Blue beside #370d40, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #370d40 in 5 real palettes, including Coastal and Kiln, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #370d40: 9 real palettes, including Dusk and Open House, as the supporting colour.
Real palettes that use #370d40
Tints & shades
Harmonies
Contrast
| #370d40 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 16.23:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.29:1 | 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 #370d40 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
#370d40 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 #370d40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/370d40-be9fc1-a8cb62-2d1f2a-ece9f1?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