Crayon Box
Open in tool →Red, teal and yellow at crayon saturation — joyful, but on white with black type so it stays readable for grown-ups.
Color
#fb635b
#fb635b
hex
#fb635brgb
rgb(251, 99, 91)hsl
hsl(3, 95%, 67%)oklch
oklch(0.693 0.188 26.2)Closest name: Camellia (#f6685a)Relative luminance 0.3019
Colors that go with #fb635b
Charcoal, Light Sea Green 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 body-text near-black for #fb635b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Light Sea Green #20b2aa
complementaryshippedLight Sea Green sits directly opposite #fb635b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #fb635b in 7 real palettes, including Ember and Heatwave, as the accent.
Blue #0000ff
shipped7 real palettes, including Monzo's brand system and Sketch's brand system put Blue beside #fb635b, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #fb635b: 4 real palettes, including Alpine and Diner, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #fb635b: 4 real palettes, including Cobalt Pop and NASA's brand system, as the lead colour.
Cornflower Blue #6495ed
split-complementshippedCornflower Blue is a split-complement of #fb635b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #fb635b in 8 real palettes, including Target : Expect More. Pay Less.'s brand system and Snyk's brand system, as the lead colour.
Real palettes that use #fb635b
Tints & shades
Harmonies
Contrast
| #fb635b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.98:1 | fail | fail | fail | |
Aaon black | 7.04:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fb635b as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#fb635b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fb635b
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 #fb635b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fb635b-c4a39c-62cb9d-2d261f-f1e9ed?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