Palettes / Colors / #EFFD4F
#EFFD4F — Vivid Yellow
#EFFD4F is a yellow color we call 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 #EFFD4F 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.
#EFFD4F 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 #5D4EFD; it also sits naturally between #FDB44E and #97FD4E. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #EFFD4F |
|---|---|
| RGB | 239, 253, 79 |
| HSL | 65°, 98%, 65% |
| HSV | 65°, 69%, 99% |
| CMYK | 6%, 0%, 69%, 1% |
| XYZ | 72.13, 89.17, 20.81 |
| Yxy | 89.17, 0.3961, 0.4896 |
| CIE-Lab | 95.65, -25.17, 77.30 |
| Hunter Lab | 94.43, -24.23, 49.74 |
RGB & CMYK percentages
Red 94% · Green 99% · Blue 31%
Cyan 6% · Magenta 0% · Yellow 69% · Key 1%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
CSS code for #EFFD4F
.text { color: #EFFD4F; }
.background { background-color: #EFFD4F; }
.border { border: 3px solid #EFFD4F; }
.text-rgb { color: rgb(239, 253, 79); }
.text-hsl { color: hsl(65, 98%, 65%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #EFFD4F; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(239, 253, 79, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #EFFD4F; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(239, 253, 79, 0.8); }
HTML: <p style="color:#EFFD4F">Text here</p> · <div style="background-color:#EFFD4F">Div content here</div>
Shades of #EFFD4F
Tints of #EFFD4F
Tones of #EFFD4F
Color harmonies
Complementary — #5D4EFD:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 1.12:1 Fails |
|---|---|
| Against black text | 18.83:1 AAA |
Best text color on #EFFD4F: #000000.
Semi-transparent (opacity) text on #EFFD4F
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:
Smaller body text shows the effect best.
Blended color: · Contrast against #EFFD4F: ·
How #EFFD4F 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 #EFFD4F 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
Frequently asked questions
What color is #EFFD4F?
#EFFD4F is Vivid Yellow, a yellow color (RGB 239, 253, 79). Its closest standard named color is Khaki.
What is the RGB and HSL of #EFFD4F?
#EFFD4F is RGB 239, 253, 79 — HSL 65°, 98%, 65% — CMYK 6%, 0%, 69%, 1%.
What colors go with #EFFD4F?
Its complement is #5D4EFD; analogous partners are #FDB44E and #97FD4E. It also appears in 6+ palettes in our collection.
Can I use #EFFD4F for text?
Black text on #EFFD4F has a contrast ratio of 18.83:1 (passes WCAG AA); white text gives 1.12:1.