Macaron
Open in tool →Rose, sky and pistachio at patisserie strength — the pastel trio, with a plum-grey text colour so it never washes out.
Color
#40303e
#40303e
hex
#40303ergb
rgb(64, 48, 62)hsl
hsl(308, 14%, 22%)oklch
oklch(0.333 0.033 330.5)Closest name: Call It a Night (#42364c)Relative luminance 0.0355
Colors that go with #40303e
Dark Olive Green, Sea Green and Teal 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.
Dark Olive Green #556b2f
split-complementshippedDark Olive Green is a split-complement of #40303e: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #40303e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal #008080
split-complementshippedTeal is a split-complement of #40303e: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #40303e in 8 real palettes, including McDonald's's brand system and Beach Hut, as the lead colour.
Blue #0000ff
shipped13 real palettes, including Dunkin''s brand system and Minecraft's brand system put Blue beside #40303e, as the supporting colour.
Blush Pink #e8b4b8
shipped5 real palettes, including Blush and Garden Wedding put Blush Pink beside #40303e, as the supporting colour.
Burlywood #deb887
shippedBurlywood is paired with #40303e in 5 real palettes, including Polaroid and Coastal, as the accent.
Cream #fffdd0
neutralshippedCream is the surface #40303e wants: a warm off-white that shares its undertone, so #40303e reads softer on it than on pure white.
Real palettes that use #40303e
Tints & shades
Harmonies
Contrast
| #40303e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.28:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.71:1 | 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 #40303e as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#40303e reads as warm, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #40303e
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #40303e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/40303e-c19fb8-87cb62-2d1f25-eee9f1?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