Color
#42739e
#42739ergb(66, 115, 158)hsl(208, 41%, 44%)oklch(0.54 0.086 246.7)Colors that go with #42739e
Charcoal, Sienna and Amber 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 #42739e: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #42739e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #42739e in 8 real palettes, including Lemon Squeezy's brand system and Wired's brand system, as the lead colour.
Blue #0000ff
shipped5 real palettes, including Activision's brand system and Pixar's brand system put Blue beside #42739e, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #42739e: 8 real palettes, including Fintech Trust and Glacier, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #42739e: 4 real palettes, including Dusk and Riverbed, as the accent.
Crimson #dc143c
shippedCrimson is paired with #42739e in 15 real palettes, including Retro Pop and Wendy's's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #42739e: 4 real palettes, including Deep Water and Venmo's brand system, as the lead colour.
Real palettes that use #42739e
Tints & shades
Harmonies
Contrast
| #42739e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.03:1 | pass | pass | fail |
|
Aaon black | 4.18:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #42739e 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
#42739e reads as cool, modern. 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 #42739e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/42739e-9cadc4-df4e51-1f212d-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