Color

#1f2933

#1f2933
hex#1f2933
rgbrgb(31, 41, 51)
hslhsl(210, 24%, 16%)
oklchoklch(0.276 0.023 248.7)
Closest name: Infinity (#222831)Relative luminance 0.0212

Tints & shades

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

Harmonies

Complementary

Open in tool →

#33291f

#1f3333 · #1f1f33

#331f29 · #29331f

Split-complementary

Open in tool →

#331f1f · #33331f

#331f33 · #33291f · #1f331f

Contrast

#1f2933 as textRatioAAAA largeAAAFix
Aaon white
14.76:1passpasspassPasses AAA — no fix needed.
Aaon black
1.42:1failfailfail
  • AA: use #5b7895 as the text (4.57:1)
  • AAA: use #8199b1 as the text (7.12:1)
  • AA: or shift the background to #8f8f8f (4.56:1)
  • AAA: or shift the background to #b3b3b3 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f2933 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1f2933 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f2933
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 #1f2933 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f2933-9cabc4-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