Color
#154ef9
#154ef9rgb(21, 78, 249)hsl(225, 95%, 53%)oklch(0.518 0.258 264.2)Colors that go with #154ef9
Crimson, Medium Sea Green and Orange Red 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.
Crimson #dc143c
triadicshippedCrimson completes a triad with #154ef9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #154ef9 in 4 real palettes, including Console Light and Telehealth, as the accent — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #154ef9 in 4 real palettes, including Strava's brand system and Monzo's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #154ef9 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 #154ef9: softer than #000 and cool enough to feel like part of the same palette.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #154ef9 in 3 real palettes, including HashiCorp's brand system and Readymag's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #154ef9 in 3 real palettes, including Telehealth and Discord's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #154ef9 in 3 real palettes, including Campus and Slate Workspace, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #154ef9
Tints & shades
Harmonies
Contrast
| #154ef9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.02:1 | pass | pass | fail |
|
Aaon black | 3.49:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #154ef9 as the background.
Brands using this color
Fonts for this mood
#154ef9 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 #154ef9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/154ef9-9ca1c4-df754e-221f2d-e9eff1?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