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FFFF81

#FFFF81 Butter

#FFFF81 is a very light, moderately saturated yellow named Butter. In the RGB color model it is made of 100.0% red, 100.0% green and 50.6% blue (rgb(255, 255, 129)). Its HSL value is 60° hue, 100% saturation and 75% lightness, and in CMYK it is 0% cyan, 0% magenta, 49% yellow and 0% black. #FFFF81 is a warm color. Black text reads best on it, with a contrast ratio of 19.87:1.

Make a palette with #FFFF81

#FFFF81 color conversion

HEX
RGB
HSL
HSB / HSV
HWB
CMYK
XYZ
CIELAB
CIELCh
CIELUV
OKLCH

Variations of #FFFF81

Shades

Mixed with black: richer and darker.

FFFF81DEDE6FBEBE5E9E9E4E80803E63632E48481F2E2E12161606030301

Tints

Mixed with white: lighter and softer.

FFFF81FFFF91FFFF9FFFFFACFEFFB9FEFFC6FEFFD2FFFFDDFFFFE9FFFFF4

Tones

Mixed with gray: calmer and more muted.

FFFF81F1F283E4E585D7D886CACB86BDBE86B0B186A4A5859899848C8C82

Hues

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

FFF5EDFFF5EBFFF6E7FFF6E0FFF8D2FFFF81F1FFC4EBFFD7E8FFE1E5FFE8E3FFEE

Temperatures

Cooler on the left, warmer on the right.

D1E7ACDAECA5E3F19DECF695F6FA8BFFFF81FFFA7DFFF579FFF176FFEC72FFE76E

#FFFF81 color harmonies

Complementary

The opposite hue — maximum contrast and energy.

FFFF818181FF
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Split complementary

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

FFFF8181C0FFC081FF
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Analogous

Neighbouring hues — calm, cohesive and natural.

FFFF81FFC081C0FF81
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Triadic

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

FFFF8181FFFFFF81FF
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Tetradic

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

FFFF8181FF818181FFFF81FF
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Square

Four hues spaced at 90° — bold and playful.

FFFF8181FFC08181FFFF81C0
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#FFFF81 for color-blind viewers (and dogs)

How #FFFF81 appears with each type of color vision deficiency (Machado 2009 model) — and to your dog. Try the dog vision simulator →

  • Dog vision 97% similarHow dogs see it · simulated as #FFFB87
  • Protanopia 96% similar1.3% of men, 0.02% of women · simulated as #FFF675
  • Protanomaly 97% similar1.3% of men, 0.02% of women · simulated as #FFF97B
  • Deuteranopia 97% similar1.2% of men, 0.01% of women · simulated as #FFFB87
  • Deuteranomaly 98% similar5% of men, 0.35% of women · simulated as #FFFC85
  • Tritanopia 74% similar0.001% of men, 0.03% of women · simulated as #FFF2E2
  • Tritanomaly 87% similar0.0001% of men, 0.0001% of women · simulated as #FFFAB6
  • Achromatopsia 70% similar0.003% of men, 0.003% of women · simulated as #F9F9F9
  • Achromatomaly 77% similar0.001% of men, 0.001% of women · simulated as #FAFAE2

#FFFF81 contrast checker

AaThe quick brown fox jumps over the lazy dog.
1.06:1 Very poor#FFFF81 text on white
AA normalFailAAA normalFail
AA largeFailAAA largeFail
AaThe quick brown fox jumps over the lazy dog.
19.87:1 Super#FFFF81 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 #FFFF81

Palettes with #FFFF81

#FFFF81 in CSS

/* Butter */
.color { color: #FFFF81; }
.background { background-color: #FFFF81; }
.border { border: 1px solid #FFFF81; }

/* Other notations */
color: rgb(255 255 129);
color: hsl(60 100% 75%);
color: oklch(0.975 0.148 108.9);

#FFFF81 FAQ

What color is #FFFF81?

#FFFF81 is a very light, moderately saturated yellow. Its closest named color is Butter. It belongs to the yellow color family and is a warm color.

What is the RGB value of #FFFF81?

#FFFF81 is rgb(255, 255, 129) in RGB, hsl(60, 100%, 75%) in HSL and cmyk(0%, 0%, 49%, 0%) in CMYK.

What is the complementary color of #FFFF81?

The complementary color of #FFFF81 is #8181FF, which sits opposite it on the color wheel.

Which text color works on #FFFF81?

Black text has the best contrast on #FFFF81: 19.87:1, which meets the WCAG AA requirement of 4.5:1 for normal text.

Is #FFFF81 a warm or cool color?

#FFFF81 is a warm color.