Studio Grey
Open in tool →A pure greyscale with a single electric blue — the portfolio palette that makes work look considered.
Color
#4e87f9
#4e87f9
hex
#4e87f9rgb
rgb(78, 135, 249)hsl
hsl(220, 93%, 64%)oklch
oklch(0.642 0.181 262.5)Closest name: dodgerblue (#1e90ff)Relative luminance 0.2579
Colors that go with #4e87f9
Charcoal, Medium Sea Green and 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #4e87f9: softer than #000 and cool enough to feel like part of the same palette.
Medium Sea Green #3cb371
triadicshippedMedium Sea Green completes a triad with #4e87f9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Red #ff0000
triadicshippedRed completes a triad with #4e87f9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #4e87f9 in 9 real palettes, including Heatwave and Blueprint, as the supporting colour.
Blue #0000ff
shipped13 real palettes, including Qualcomm's brand system and Unity's brand system put Blue beside #4e87f9, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #4e87f9: 7 real palettes, including Carrefour's brand system and Blue Mono, as the accent.
Crimson #dc143c
shippedCrimson is paired with #4e87f9 in 6 real palettes, including Behance's brand system and WWE's brand system, as the accent.
Dark Orange #ff8c00
shippedDark Orange shows up next to #4e87f9 in 4 real palettes, including Playground and Elastic's brand system, as the lead colour.
Real palettes that use #4e87f9
Tints & shades
Harmonies
Contrast
| #4e87f9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.41:1 | fail | pass | fail | |
Aaon black | 6.16:1 | pass | 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 #4e87f9 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#4e87f9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #4e87f9
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 #4e87f9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/4e87f9-9ca5c4-df694e-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