Color

#2a333c

#2a333c
hex#2a333c
rgbrgb(42, 51, 60)
hslhsl(210, 18%, 20%)
oklchoklch(0.316 0.02 248.5)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0319

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3c332a

#2a3c3c · #2a2a3c

#3c2a33 · #333c2a

Split-complementary

Open in tool →

#3c2a2a · #3c3c2a

#3c2a3c · #3c332a · #2a3c2a

Contrast

#2a333c as textRatioAAAA largeAAAFix
Aaon white
12.83:1passpasspassPasses AAA — no fix needed.
Aaon black
1.64:1failfailfail
  • AA: use #62788d as the text (4.59:1)
  • AAA: use #8799ab as the text (7.17:1)
  • AA: or shift the background to #999999 (4.5:1)
  • AAA: or shift the background to #c2c2c2 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a333c as the background.

Brands using this color

Fonts for this mood

#2a333c reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a333c
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 #2a333c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a333c-9cabc4-df514e-1f202d-e9f1f1?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