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EFEC54

#EFEC54 Sulphuric

#EFEC54 is a very light, vivid yellow named Sulphuric. In the RGB color model it is made of 93.7% red, 92.5% green and 32.9% blue (rgb(239, 236, 84)). Its HSL value is 59° hue, 83% saturation and 63% lightness, and in CMYK it is 0% cyan, 1% magenta, 65% yellow and 6% black. #EFEC54 is a warm color. Black text reads best on it, with a contrast ratio of 16.80:1.

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#EFEC54 color conversion

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Variations of #EFEC54

Shades

Mixed with black: richer and darker.

EFEC54D0CD48B1AF3C9492317876265C5B1B4242112A2908141302030300

Tints

Mixed with white: lighter and softer.

EFEC54F0EE6CF2F181F3F393F5F5A4F6F7B5F8F9C4FAFAD3FBFCE2FDFEF1

Tones

Mixed with gray: calmer and more muted.

EFEC54E3E15ED8D666CCCB6CC1C072B5B576AAAB799FA07C95957E8A8B7F

Hues

The same lightness and chroma, rotated around the color wheel.

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Temperatures

Cooler on the left, warmer on the right.

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#EFEC54 color harmonies

Complementary

The opposite hue — maximum contrast and energy.

EFEC545457EF
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Split complementary

The two hues next to the complement — contrast with less tension.

EFEC5454A5EF9F54EF
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Analogous

Neighbouring hues — calm, cohesive and natural.

EFEC54EF9E54A4EF54
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Triadic

Three hues evenly spaced at 120° — vibrant yet balanced.

EFEC5454EFECEC54EF
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Tetradic

Two complementary pairs — rich, best with one dominant color.

EFEC5457EF545457EFEC54EF
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Square

Four hues spaced at 90° — bold and playful.

EFEC5454EF9E5457EFEF54A4
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#EFEC54 for color-blind viewers (and dogs)

How #EFEC54 appears with each type of color vision deficiency (Machado 2009 model) — and to your dog. Try the dog vision simulator →

  • Dog vision 95% similarHow dogs see it · simulated as #FFE85E
  • Protanopia 94% similar1.3% of men, 0.02% of women · simulated as #FFE33F
  • Protanomaly 96% similar1.3% of men, 0.02% of women · simulated as #FBE649
  • Deuteranopia 95% similar1.2% of men, 0.01% of women · simulated as #FFE85E
  • Deuteranomaly 96% similar5% of men, 0.35% of women · simulated as #FBE959
  • Tritanopia 70% similar0.001% of men, 0.03% of women · simulated as #FFDDCD
  • Tritanomaly 85% similar0.0001% of men, 0.0001% of women · simulated as #F5E69B
  • Achromatopsia 66% similar0.003% of men, 0.003% of women · simulated as #E6E6E6
  • Achromatomaly 73% similar0.001% of men, 0.001% of women · simulated as #E8E7CE

#EFEC54 contrast checker

AaThe quick brown fox jumps over the lazy dog.
1.25:1 Very poor#EFEC54 text on white
AA normalFailAAA normalFail
AA largeFailAAA largeFail
AaThe quick brown fox jumps over the lazy dog.
16.80:1 Super#EFEC54 text on black
AA normalPassAAA normalPass
AA largePassAAA largePass

Need another background? Pick any pair in the palette generator and open the contrast panel.

Colors similar to #EFEC54

Palettes with #EFEC54

#EFEC54 in CSS

/* Sulphuric */
.color { color: #EFEC54; }
.background { background-color: #EFEC54; }
.border { border: 1px solid #EFEC54; }

/* Other notations */
color: rgb(239 236 84);
color: hsl(59 83% 63%);
color: oklch(0.919 0.168 108.2);

#EFEC54 FAQ

What color is #EFEC54?

#EFEC54 is a very light, vivid yellow. Its closest named color is Sulphuric. It belongs to the yellow color family and is a warm color.

What is the RGB value of #EFEC54?

#EFEC54 is rgb(239, 236, 84) in RGB, hsl(59, 83%, 63%) in HSL and cmyk(0%, 1%, 65%, 6%) in CMYK.

What is the complementary color of #EFEC54?

The complementary color of #EFEC54 is #5457EF, which sits opposite it on the color wheel.

Which text color works on #EFEC54?

Black text has the best contrast on #EFEC54: 16.80:1, which meets the WCAG AA requirement of 4.5:1 for normal text.

Is #EFEC54 a warm or cool color?

#EFEC54 is a warm color.