Palettes / Colors / #EFF599

#EFF599 — Light Vivid Yellow

#EFF599 is a yellow color we call Light Vivid Yellow, closest to the named color Khaki (#F0E68C). It belongs to the yellow family.

Color name

Closest CSS keyword: khaki (#F0E68C) — not an exact match. CSS khaki gives you #F0E68C, a different color; use #EFF599 when you need this exact shade.

Sources: common names follow widely used color-name references; CSS keywords and their hex values follow the CSS Color specification.

#EFF599 is a warm yellow color associated with optimism, attention and cheer. It is light enough to work as a background or base color, with darker text on top.

Its strongest partner is its complement #9F99F5; it also sits naturally between #F5CD99 and #C1F599. 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 94% · Green 96% · Blue 60%

Cyan 2% · Magenta 0% · Yellow 38% · Key 4%

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

Previews

CSS code for #EFF599

.text { color: #EFF599; }
.background { background-color: #EFF599; }
.border { border: 3px solid #EFF599; }
.text-rgb { color: rgb(239, 245, 153); }
.text-hsl { color: hsl(64, 82%, 78%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #EFF599; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(239, 245, 153, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #EFF599; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(239, 245, 153, 0.8); }

HTML: <p style="color:#EFF599">Text here</p> · <div style="background-color:#EFF599">Div content here</div>

Shades of #EFF599

Tints of #EFF599

Tones of #EFF599

Color harmonies

Complementary — #9F99F5:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #EFF599: #000000.

Semi-transparent (opacity) text on #EFF599

Text set with opacity blends into the background, so its real contrast is lower than the solid ratios above. Choose a text color and an opacity to see the blended color and its true ratio:

How #EFF599 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 #EFF599 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

← #EFF598  ·  #EFF59A →

Frequently asked questions

What color is #EFF599?

#EFF599 is Light Vivid Yellow, a yellow color (RGB 239, 245, 153). Its closest standard named color is Khaki.

What is the RGB and HSL of #EFF599?

#EFF599 is RGB 239, 245, 153 — HSL 64°, 82%, 78% — CMYK 2%, 0%, 38%, 4%.

What colors go with #EFF599?

Its complement is #9F99F5; analogous partners are #F5CD99 and #C1F599. It also appears in 6+ palettes in our collection.

Can I use #EFF599 for text?

Black text on #EFF599 has a contrast ratio of 18.19:1 (passes WCAG AA); white text gives 1.15:1.