Color

#646878

#646878
hex#646878
rgbrgb(100, 104, 120)
hslhsl(228, 9%, 43%)
oklchoklch(0.52 0.026 274.4)
Closest name: Alley Cat (#656874)Relative luminance 0.1397

Tints & shades

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

Harmonies

Complementary

Open in tool →

#787464

#647278 · #6a6478

#786468 · #687864

Split-complementary

Open in tool →

#786a64 · #727864

#786472 · #787464 · #64786a

Contrast

#646878 as textRatioAAAA largeAAAFix
Aaon white
5.54:1passpassfail
  • AAA: use #545764 as the text (7.18:1)
Aaon black
3.79:1failpassfail
  • AA: use #6f7485 as the text (4.51:1)
  • AAA: use #9396a5 as the text (7.15:1)
  • AA: or shift the background to #e8e8e8 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #646878 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

#646878 reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #646878
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #646878 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/646878-9c9fc4-df7c4e-231f2d-e9eff1?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