Color
#42497b
#42497brgb(66, 73, 123)hsl(233, 30%, 37%)oklch(0.423 0.083 276.2)Colors that go with #42497b
Midnight Blue, Powder Blue and Taupe 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.
Midnight Blue #191970
shippedMidnight Blue is paired with #42497b in 5 real palettes, including First Snow and Fintech Trust, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #42497b in 6 real palettes, including First Snow and Glacier, as the accent — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #42497b in 5 real palettes, including Dusk and Darkroom, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
complementaryDark Olive Green sits directly opposite #42497b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cadet Blue #5f9ea0
shippedCadet Blue is paired with #42497b in 3 real palettes, including Dusk and Open House, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Goldenrod #daa520
shippedGoldenrod is paired with #42497b in 3 real palettes, including Sapphire & Gold and Open House, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #42497b in 3 real palettes, including Console Light and Fintech Trust, as the accent — a combination designers have actually shipped, not a computed rotation.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #42497b: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #42497b
Tints & shades
Harmonies
Contrast
| #42497b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.5:1 | 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 #42497b as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #42497b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/42497b-9c9cc4-df884e-241f2d-e9eef1?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