Playground
Open in tool →Orange, blue and green — the colors of playground equipment; loud, cheerful, obviously for kids.
Color
#457cfc
#457cfc
hex
#457cfcrgb
rgb(69, 124, 252)hsl
hsl(222, 97%, 63%)oklch
oklch(0.619 0.2 264)Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2271
Colors that go with #457cfc
Charcoal, Red and Amber 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 #457cfc: softer than #000 and cool enough to feel like part of the same palette.
Red #ff0000
triadicshippedRed completes a triad with #457cfc — 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 #457cfc in 10 real palettes, including Google's brand system and Heatwave, as the accent.
Blue #0000ff
shipped13 real palettes, including Penpot's brand system and Cargo's brand system put Blue beside #457cfc, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #457cfc: 11 real palettes, including Behance's brand system and Carrefour's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #457cfc in 12 real palettes, including Behance's brand system and WWE's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #457cfc: 9 real palettes, including Venmo's brand system and Patreon's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #457cfc: 16 real palettes, including Coursera's brand system and Venmo's brand system, as the accent.
Real palettes that use #457cfc
Tints & shades
Harmonies
Contrast
| #457cfc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.79:1 | fail | pass | fail | |
Aaon black | 5.54:1 | 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 #457cfc as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#457cfc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #457cfc
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 #457cfc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/457cfc-9ca3c4-df6e4e-211f2d-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