Color

#0a293d

#0a293d
hex#0a293d
rgbrgb(10, 41, 61)
hslhsl(204, 72%, 14%)
oklchoklch(0.269 0.052 241)
Closest name: Eternal Darkness (#1c2841)Relative luminance 0.0199

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3d1f0a

#0a3d38 · #0a0f3d

#3d0a29 · #293d0a

Split-complementary

Open in tool →

#3d0a0f · #3d380a

#380a3d · #3d1f0a · #0f3d0a

Contrast

#0a293d as textRatioAAAA largeAAAFix
Aaon white
15.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.4:1failfailfail
  • AA: use #1e7bb8 as the text (4.58:1)
  • AAA: use #3a9ddf as the text (7.07:1)
  • AA: or shift the background to #8f8f8f (4.65:1)
  • AAA: or shift the background to #b3b3b3 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a293d as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#0a293d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a293d
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 #0a293d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a293d-9cafc4-df4e5a-1f222d-e9f1f0?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