Color

#303e41

#303e41
hex#303e41
rgbrgb(48, 62, 65)
hslhsl(191, 15%, 22%)
oklchoklch(0.353 0.019 212.2)
Closest name: Artist’s Charcoal (#37393e)Relative luminance 0.0446

Colors that go with #303e41

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 →

#413330

#30413b · #303541

#41303d · #3d4130

Split-complementary

Open in tool →

#413035 · #413b30

#3b3041 · #413330 · #354130

Contrast

#303e41 as textRatioAAAA largeAAAFix
Aaon white
11.1:1passpasspassPasses AAA — no fix needed.
Aaon black
1.89:1failfailfail
  • AA: use #5f7b81 as the text (4.64:1)
  • AAA: use #819ca2 as the text (7.21:1)
  • AA: or shift the background to #a6a6a6 (4.56:1)
  • AAA: or shift the background to #cfcfcf (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #303e41 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

#303e41 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #303e41
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 #303e41 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/303e41-a2b6be-df4e7a-1f252d-e9f1ef?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