Color

#423f33

#423f33
hex#423f33
rgbrgb(66, 63, 51)
hslhsl(48, 13%, 23%)
oklchoklch(0.367 0.02 95.6)
Closest name: Black Olive (#3b3c36)Relative luminance 0.0495

Tints & shades

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

Harmonies

Complementary

Open in tool →

#333642

#423833 · #3e4233

#33423f · #3f3342

Split-complementary

Open in tool →

#333e42 · #383342

#334238 · #333642 · #42333e

Contrast

#423f33 as textRatioAAAA largeAAAFix
Aaon white
10.55:1passpasspassPasses AAA — no fix needed.
Aaon black
1.99:1failfailfail
  • AA: use #7c765f as the text (4.61:1)
  • AAA: use #9d9880 as the text (7.24:1)
  • AA: or shift the background to #ababab (4.59:1)
  • AAA: or shift the background to #d4d4d4 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #423f33 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

#423f33 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #423f33
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 #423f33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/423f33-c4c09c-62aacb-2a2d1f-f1ece9?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