Palettes / Colors / #FFFF51

#FFFF51 — Light Vivid Yellow

#FFFF51 is a yellow color we call Light Vivid Yellow, closest to the named color Khaki (#F0E68C). It belongs to the yellow family.

#FFFF51 is a warm yellow color associated with optimism, attention and cheer. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.

Its strongest partner is its complement #5252FF; it also sits naturally between #FFA852 and #A8FF52. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 100% · Green 100% · Blue 32%

Cyan 0% · Magenta 0% · Yellow 68% · Key 0%

CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.

Previews

CSS code for #FFFF51

.text { color: #FFFF51; }
.background { background-color: #FFFF51; }
.border { border: 3px solid #FFFF51; }
.text-rgb { color: rgb(255, 255, 81); }
.text-hsl { color: hsl(60, 100%, 66%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #FFFF51; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(255, 255, 81, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #FFFF51; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(255, 255, 81, 0.8); }

HTML: <p style="color:#FFFF51">Text here</p> · <div style="background-color:#FFFF51">Div content here</div>

Shades of #FFFF51

Tints of #FFFF51

Tones of #FFFF51

Color harmonies

Complementary — #5252FF:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #FFFF51: #000000.

How #FFFF51 looks with color blindness

Simulated with standard Machado color-vision-deficiency matrices — useful when this color carries meaning in charts, maps or interfaces:

Closest design-system colors

The nearest matches in the Tailwind CSS, Material Design and Bootstrap palettes — handy when you need a framework class instead of a raw hex:

Palettes with a similar color

These palettes use a close neighbour of #FFFF51 rather than the exact color:

Similar colors

The closest colors that actually appear in our palette collection — click any to open its page:

Browse neighbouring colors

← #FFFF50  ·  #FFFF52 →

Frequently asked questions

What color is #FFFF51?

#FFFF51 is Light Vivid Yellow, a yellow color (RGB 255, 255, 81). Its closest standard named color is Khaki.

What is the RGB and HSL of #FFFF51?

#FFFF51 is RGB 255, 255, 81 — HSL 60°, 100%, 66% — CMYK 0%, 0%, 68%, 0%.

What colors go with #FFFF51?

Its complement is #5252FF; analogous partners are #FFA852 and #A8FF52. It also appears in 6+ palettes in our collection.

Can I use #FFFF51 for text?

Black text on #FFFF51 has a contrast ratio of 19.67:1 (passes WCAG AA); white text gives 1.07:1.