Color

#2a313c

#2a313c
hex#2a313c
rgbrgb(42, 49, 60)
hslhsl(217, 18%, 20%)
oklchoklch(0.311 0.022 259.4)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0302

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3c352a

#2a3a3c · #2c2a3c

#3c2a31 · #313c2a

Split-complementary

Open in tool →

#3c2c2a · #3a3c2a

#3c2a3a · #3c352a · #2a3c2c

Contrast

#2a313c as textRatioAAAA largeAAAFix
Aaon white
13.1:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #667893 as the text (4.67:1)
  • AAA: use #8a97ad as the text (7.11:1)
  • AA: or shift the background to #999999 (4.6:1)
  • AAA: or shift the background to #bfbfbf (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 #2a313c as the background.

Brands using this color

Fonts for this mood

#2a313c reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a313c
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 #2a313c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a313c-9ca7c4-df624e-201f2d-e9f0f1?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