Color

#10263c

#10263c
hex#10263c
rgbrgb(16, 38, 60)
hslhsl(210, 58%, 15%)
oklchoklch(0.263 0.05 250.3)
Closest name: Eternal Darkness (#1c2841)Relative luminance 0.0182

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3c2610

#103c3c · #10103c

#3c1026 · #263c10

Split-complementary

Open in tool →

#3c1010 · #3c3c10

#3c103c · #3c2610 · #103c10

Contrast

#10263c as textRatioAAAA largeAAAFix
Aaon white
15.39:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #3278bd as the text (4.56:1)
  • AAA: use #629cd5 as the text (7.24:1)
  • AA: or shift the background to #8c8c8c (4.58:1)
  • AAA: or shift the background to #b0b0b0 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #10263c as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#10263c reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #10263c
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 #10263c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/10263c-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