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
#403243
#403243
hex
#403243rgb
rgb(64, 50, 67)hsl
hsl(289, 15%, 23%)oklch
oklch(0.339 0.035 320.3)Closest name: Call It a Night (#42364c)Relative luminance 0.0378
Colors that go with #403243
Dark Olive Green, 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.
Dark Olive Green #556b2f
split-complementshippedDark Olive Green is a split-complement of #403243: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #403243 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sienna #a0522d
triadicshippedSienna completes a triad with #403243 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
split-complementshippedTeal is a split-complement of #403243: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #403243 in 6 real palettes, including McDonald's's brand system and Beach Hut, as the lead colour.
Blue #0000ff
shipped12 real palettes, including Dunkin''s brand system and Minecraft's brand system put Blue beside #403243, as the supporting colour.
Blush Pink #e8b4b8
shipped5 real palettes, including Garden Wedding and Blush put Blush Pink beside #403243, as the supporting colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #403243: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #403243
Tints & shades
Harmonies
Contrast
| #403243 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 11.96:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.76:1 | 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 #403243 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
#403243 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #403243
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 #403243 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/403243-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