Palettes / Colors / #ECFE2B

#ECFE2B — Vivid Yellow

#ECFE2B is a yellow color we call Vivid Yellow, closest to the named color Yellow (#FFFF00). It belongs to the yellow family.

Color name

Closest CSS keyword: yellow (#FFFF00) — not an exact match. CSS yellow gives you #FFFF00, a different color; use #ECFE2B 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.

#ECFE2B 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 #3C2AFE; it also sits naturally between #FEA62A and #82FE2A. 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 100% · Blue 17%

Cyan 7% · Magenta 0% · Yellow 83% · Key 0%

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

Previews

CSS code for #ECFE2B

.text { color: #ECFE2B; }
.background { background-color: #ECFE2B; }
.border { border: 3px solid #ECFE2B; }
.text-rgb { color: rgb(236, 254, 43); }
.text-hsl { color: hsl(65, 99%, 58%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #ECFE2B; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(236, 254, 43, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #ECFE2B; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(236, 254, 43, 0.8); }

HTML: <p style="color:#ECFE2B">Text here</p> · <div style="background-color:#ECFE2B">Div content here</div>

Shades of #ECFE2B

Tints of #ECFE2B

Tones of #ECFE2B

Color harmonies

Complementary — #3C2AFE:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #ECFE2B: #000000.

Semi-transparent (opacity) text on #ECFE2B

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 #ECFE2B 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 #ECFE2B 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

← #ECFE2A  ·  #ECFE2C →

Frequently asked questions

What color is #ECFE2B?

#ECFE2B is Vivid Yellow, a yellow color (RGB 236, 254, 43). Its closest standard named color is Yellow.

What is the RGB and HSL of #ECFE2B?

#ECFE2B is RGB 236, 254, 43 — HSL 65°, 99%, 58% — CMYK 7%, 0%, 83%, 0%.

What colors go with #ECFE2B?

Its complement is #3C2AFE; analogous partners are #FEA62A and #82FE2A. It also appears in 6+ palettes in our collection.

Can I use #ECFE2B for text?

Black text on #ECFE2B has a contrast ratio of 18.78:1 (passes WCAG AA); white text gives 1.12:1.