Color

#283239

#283239
hex#283239
rgbrgb(40, 50, 57)
hslhsl(205, 18%, 19%)
oklchoklch(0.311 0.019 238.7)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0303

Tints & shades

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

Harmonies

Complementary

Open in tool →

#392f28

#283938 · #282939

#392832 · #323928

Split-complementary

Open in tool →

#392829 · #393828

#382839 · #392f28 · #293928

Contrast

#283239 as textRatioAAAA largeAAAFix
Aaon white
13.08:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #60798a as the text (4.6:1)
  • AAA: use #849aa9 as the text (7.18:1)
  • AA: or shift the background to #999999 (4.59:1)
  • AAA: or shift the background to #bfbfbf (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #283239 as the background.

Brands using this color

Fonts for this mood

#283239 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283239
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 #283239 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283239-9cafc4-df4e58-1f212d-e9f1f0?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