Color
#042a3e
#042a3ergb(4, 42, 62)hsl(201, 88%, 13%)oklch(0.271 0.055 237.2)Colors that go with #042a3e
Charcoal, Crimson and Royal Blue 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 #042a3e: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
split-complementshippedCrimson is a split-complement of #042a3e: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Royal Blue #4169e1
analogousshippedRoyal Blue is #042a3e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #042a3e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal #008080
analogousshippedTeal is #042a3e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Amber #ffbf00
shippedAmber is paired with #042a3e in 18 real palettes, including Beach Hut and Southwest Airlines's brand system, as the supporting colour.
Blue #0000ff
shipped23 real palettes, including Monzo's brand system and Readymag's brand system put Blue beside #042a3e, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #042a3e in 8 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour.
Real palettes that use #042a3e
Tints & shades
Harmonies
Contrast
| #042a3e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.94:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.41:1 | 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 #042a3e 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
#042a3e reads as cool, vivid, dark. 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 #042a3e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/042a3e-9cb1c4-df4e62-1f222d-e9f1f0?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