Color
#0510eb
#0510ebrgb(5, 16, 235)hsl(237, 96%, 47%)oklch(0.432 0.29 264.5)Colors that go with #0510eb
Olive Green, Charcoal and Slate Gray 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.
Olive Green #808000
complementaryOlive Green sits directly opposite #0510eb on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #0510eb: softer than #000 and cool enough to feel like part of the same palette.
Slate Gray #708090
shippedSlate Gray is paired with #0510eb in 3 real palettes, including Campus and Ink & Paper, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
triadicshippedCrimson completes a triad with #0510eb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sienna #a0522d
split-complementSienna is a split-complement of #0510eb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Midnight Blue #191970
shippedMidnight Blue is paired with #0510eb in two real palettes: Monzo's brand system and Blue Mono, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
shippedRoyal Blue is paired with #0510eb in two real palettes: Dropbox's brand system and MongoDB's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Forest Green #228b22
triadicForest Green completes a triad with #0510eb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #0510eb
Tints & shades
Harmonies
Contrast
| #0510eb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.21:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.28:1 | 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 #0510eb as the background.
Brands using this color
Fonts for this mood
#0510eb reads as cool, vivid, technical. 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 #0510eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/0510eb-9f9cc4-df924e-251f2d-e9edf1?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