Color

#1f274d

#1f274d
hex#1f274d
rgbrgb(31, 39, 77)
hslhsl(230, 43%, 21%)
oklchoklch(0.287 0.07 272.3)
Closest name: Black Market (#222244)Relative luminance 0.0228

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4d451f

#1f3d4d · #2e1f4d

#4d1f26 · #264d1f

Split-complementary

Open in tool →

#4d2e1f · #3d4d1f

#4d1f3d · #4d451f · #1f4d2e

Contrast

#1f274d as textRatioAAAA largeAAAFix
Aaon white
14.43:1passpasspassPasses AAA — no fix needed.
Aaon black
1.46:1failfailfail
  • AA: use #5f6fbf as the text (4.51:1)
  • AAA: use #8793cf as the text (7.1:1)
  • AA: or shift the background to #919191 (4.58:1)
  • AAA: or shift the background to #b5b5b5 (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 #1f274d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#1f274d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f274d
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 #1f274d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f274d-9c9ec4-df814e-231f2d-e9eef1?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