Color

#10397e

#10397e
hex#10397e
rgbrgb(16, 57, 126)
hslhsl(218, 77%, 28%)
oklchoklch(0.362 0.126 260.4)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0454

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7e5610

#10707e · #1f107e

#7e1039 · #397e10

Split-complementary

Open in tool →

#7e1f10 · #707e10

#7e1070 · #7e5610 · #107e1f

Contrast

#10397e as textRatioAAAA largeAAAFix
Aaon white
11:1passpasspassPasses AAA — no fix needed.
Aaon black
1.91:1failfailfail
  • AA: use #2f72e4 as the text (4.65:1)
  • AAA: use #6696eb as the text (7.13:1)
  • AA: or shift the background to #a6a6a6 (4.52:1)
  • AAA: or shift the background to #cfcfcf (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #10397e 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

#10397e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #10397e
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 #10397e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/10397e-9ca6c4-df644e-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