Color
#042158
#042158rgb(4, 33, 88)hsl(219, 91%, 18%)oklch(0.268 0.105 261.3)Colors that go with #042158
Charcoal, Crimson and Steel 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 #042158: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #042158 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
analogousshippedSteel Blue is #042158'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 #042158 in 7 real palettes, including Southwest Airlines's brand system and Beach Hut, as the accent.
Blue #0000ff
shipped15 real palettes, including Monzo's brand system and Sketch's brand system put Blue beside #042158, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #042158: 9 real palettes, including SoFi's brand system and Open House, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #042158: 13 real palettes, including Blue Mono and MLB's brand system, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #042158: 5 real palettes, including Dusk and Wellness, as the accent.
Real palettes that use #042158
Tints & shades
Harmonies
Contrast
| #042158 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.4:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.36:1 | 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 #042158 as the background.
Brands using this color
Fonts for this mood
#042158 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 #042158 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/042158-9ca5c4-df664e-211f2d-e9f0f1?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