Darkroom
Open in tool →Sepia, faded ochre and a teal shadow on aged paper — the photograph-in-a-drawer palette, tuned so it still passes AA.
Color
#42575c
#42575c
hex
#42575crgb
rgb(66, 87, 92)hsl
hsl(192, 16%, 31%)oklch
oklch(0.441 0.027 213.9)Closest name: All Nighter (#455454)Relative luminance 0.0875
Colors that go with #42575c
Blue, Cadet Blue and Copper 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.
Blue #0000ff
shipped5 real palettes, including Jeep's brand system and Warp's brand system put Blue beside #42575c, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #42575c: 4 real palettes, including Dusk and Paper & Pine, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #42575c: 5 real palettes, including Desert Road and Dusk, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #42575c: 8 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #42575c in 5 real palettes, including Fireside and Mid-Century, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #42575c in 5 real palettes, including Console Light and Mint Modern, as the accent.
Midnight Blue #191970
shipped7 real palettes, including Lufthansa's brand system and First Snow put Midnight Blue beside #42575c, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #42575c was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #42575c
Tints & shades
Harmonies
Contrast
| #42575c as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.64:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.75:1 | 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 #42575c as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
mcpConnect your agent — build around #42575c
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #42575c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/42575c-a2b5be-df4e77-1f242d-e9f1ef?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