Brand color

Mercury Primary

#323341
hex#323341
rgbrgb(50, 51, 65)
hslhsl(236, 13%, 23%)
oklchoklch(0.326 0.025 281.7)
From Mercury brand colorsRelative luminance 0.0343

Mercury Primary on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the 8 public brands that use it and the palettes it appears in.

Colors that go with Mercury Primary

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.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#424133

#333c42 · #3a3342

#423334 · #344233

Split-complementary

Open in tool →

#423a33 · #3c4233

#42333c · #424133 · #33423a

Contrast

Mercury Primary as textRatioAAAA largeAAAFix
Aaon white
12.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.69:1failfailfail
  • AA: use #727492 as the text (4.63:1)
  • AAA: use #9496ad as the text (7.23:1)
  • AA: or shift the background to #9c9c9c (4.54:1)
  • AAA: or shift the background to #c4c4c4 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with Mercury Primary as the background.

Brands using this color

Palettes built around it

Fonts for this mood

Mercury Primary reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around Mercury Primary
live endpoint

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.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #323341 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/323341-9e9cc4-df8f4e-241f2d-e9eef1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md