Palettes / Colors / #ECFB99

#ECFB99 — Light Vivid Yellow

#ECFB99 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 #ECFB99 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.

#ECFB99 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 #A798FB; it also sits naturally between #FBD898 and #BBFB98. In the palettes below you can see it working alongside real color combinations from our collection.

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Color values

RGB & CMYK percentages

Red 93% · Green 98% · Blue 60%

Cyan 6% · Magenta 0% · Yellow 39% · Key 2%

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

Previews

CSS code for #ECFB99

.text { color: #ECFB99; }
.background { background-color: #ECFB99; }
.border { border: 3px solid #ECFB99; }
.text-rgb { color: rgb(236, 251, 153); }
.text-hsl { color: hsl(69, 92%, 79%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #ECFB99; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(236, 251, 153, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #ECFB99; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(236, 251, 153, 0.8); }

HTML: <p style="color:#ECFB99">Text here</p> · <div style="background-color:#ECFB99">Div content here</div>

Shades of #ECFB99

Tints of #ECFB99

Tones of #ECFB99

Color harmonies

Complementary — #A798FB:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #ECFB99: #000000.

Semi-transparent (opacity) text on #ECFB99

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 #ECFB99 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 #ECFB99 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

← #ECFB98  ·  #ECFB9A →

Frequently asked questions

What color is #ECFB99?

#ECFB99 is Light Vivid Yellow, a yellow color (RGB 236, 251, 153). Its closest standard named color is Khaki.

What is the RGB and HSL of #ECFB99?

#ECFB99 is RGB 236, 251, 153 — HSL 69°, 92%, 79% — CMYK 6%, 0%, 39%, 2%.

What colors go with #ECFB99?

Its complement is #A798FB; analogous partners are #FBD898 and #BBFB98. It also appears in 6+ palettes in our collection.

Can I use #ECFB99 for text?

Black text on #ECFB99 has a contrast ratio of 18.83:1 (passes WCAG AA); white text gives 1.12:1.