#ffff11 - Duckie Yellow color

A brilliant, high-energy yellow with an unmistakable neon quality—bright lemony and slightly green-leaning, it reads as intensely vivid and sunlit. It’s attention-grabbing and electric, evoking urgency, optimism, and youthful boldness. On dark backgrounds it pops dramatically, while on white it can lose contrast and cause glare. Best used sparingly for accents, signage, or sporty branding where maximum visibility and a lively, modern feel are desired.

color #ffff11

#ffff11 color RGB value is 255, 255, 17, and the CMYK value is 0.00, 0.00, 0.933, 0.00. Alternative names for that color are: duckie yellow, yellow, laser lemon.

Color Conversion

Name
Values
CSS
RGB(0-255)
255, 255, 17
rgb(255, 255, 17)
CMYK
0.00, 0.00, 0.933, 0.00
-
sRGB
1.00, 1.00, 0.0667
rgb(100% 100% 6.67%)
Adobe® 98 RGB compatible
1.00, 1.00, 0.248
color(a98-rgb 1 1 0.248)
HCT
111, 74.6, 97.2
color(--hct 111 51.4% 97.2%)
HSL
60.0, 100, 53.3
hsl(60 100% 53.3%)
HSV
60.0, 93.3, 100
color(--hsv 60 93.3% 100%)
HWB
60.0, 6.67, 0.00
hwb(60 6.67% 0%)
Lab
97.6, -15.7, 92.2
lab(97.6 -15.7 92.2)
P3
1.00, 1.00, 0.340
color(display-p3 1 1 0.34)
XYZ D50
0.822, 0.940, 0.115
color(xyz-d50 0.822 0.94 0.115)

Shades

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Tints

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Tones

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Color Harmonies

HEX:#ffff11
RGB:255 255 17
HSL:60deg 100% 53.33%
HEX:#1111ff
RGB:17 17 255
HSL:240deg 100% 53.33%

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