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
#3b313f
#3b313f
hex
#3b313frgb
rgb(59, 49, 63)hsl
hsl(283, 13%, 22%)oklch
oklch(0.33 0.028 316.3)Closest name: After Dark (#3c3535)Relative luminance 0.0349
Colors that go with #3b313f
Amber, Blue and Blush Pink 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.
Amber #ffbf00
shippedAmber is paired with #3b313f in 8 real palettes, including McDonald's's brand system and Beach Hut, as the lead colour.
Blue #0000ff
shipped14 real palettes, including Minecraft's brand system and Dunkin''s brand system put Blue beside #3b313f, as the accent.
Blush Pink #e8b4b8
shipped5 real palettes, including Blush and Garden Wedding put Blush Pink beside #3b313f, as the supporting colour.
Burlywood #deb887
shippedBurlywood is paired with #3b313f in 5 real palettes, including Polaroid and Coastal, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #3b313f: 9 real palettes, including Clean Beauty and Coastal, as the lead colour.
Champagne #f7e7ce
shipped7 real palettes, including Darkroom and Allbirds's brand system put Champagne beside #3b313f, as the surface under it.
Chocolate #d2691e
shippedChocolate shows up next to #3b313f in 4 real palettes, including Homestead and Wellness, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #3b313f was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #3b313f
Tints & shades
Harmonies
Contrast
| #3b313f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.37:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.7:1 | 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 #3b313f as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#3b313f reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #3b313f
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 #3b313f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/3b313f-bb9fc1-b2cb62-2d1f2b-ebe9f1?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