Color
#104d8e
#104d8ergb(16, 77, 142)hsl(211, 80%, 31%)oklch(0.421 0.123 254.2)Colors that go with #104d8e
Charcoal, Crimson and Sienna lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #104d8e: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #104d8e — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #104d8e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped7 real palettes, including CVS's brand system and Tesco's brand system put Blue beside #104d8e, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #104d8e: 6 real palettes, including MLB's brand system and Campbell's's brand system, as the supporting colour.
Midnight Blue #191970
shipped18 real palettes, including First Snow and Fintech Trust put Midnight Blue beside #104d8e, as that palette's text colour.
Orange #ffa500
shipped4 real palettes, including Amazon's brand system and Gopro's brand system put Orange beside #104d8e, as the lead colour.
Orange Red #ff4500
shippedOrange Red is paired with #104d8e in 6 real palettes, including NASA's brand system and Tide's brand system, as the supporting colour.
Real palettes that use #104d8e
Tints & shades
Harmonies
Contrast
| #104d8e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.49:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.47:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #104d8e as the background.
Brands using this color
Fonts for this mood
#104d8e reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #104d8e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/104d8e-9cabc4-df534e-1f202d-e9f1f1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md