Color

#100a29

#100a29
hex#100a29
rgbrgb(16, 10, 41)
hslhsl(252, 61%, 10%)
oklchoklch(0.175 0.06 287.3)
Closest name: Mysterious Depths (#060929)Relative luminance 0.0049

Tints & shades

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

Harmonies

Complementary

Open in tool →

#23290a

#0a1329 · #200a29

#29100a · #0a2910

Split-complementary

Open in tool →

#29200a · #13290a

#290a13 · #23290a · #0a2920

Contrast

#100a29 as textRatioAAAA largeAAAFix
Aaon white
19.13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.1:1failfailfail
  • AA: use #7b63d9 as the text (4.63:1)
  • AAA: use #9d8ce3 as the text (7.29:1)
  • AA: or shift the background to #7d7d7d (4.65:1)
  • AAA: or shift the background to #9e9e9e (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #100a29 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

#100a29 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #100a29
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 #100a29 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/100a29-a99cc4-dfb64e-281f2d-e9ecf1?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