#feff00 - Bat-Signal color

A vivid, high-energy yellow-green that reads as an electric lime or chartreuse—brilliant, intensely saturated, and strikingly luminous. It sits squarely between yellow and green, evoking citrus zest, neon signage, fresh spring foliage, and synthetic fluorescent pigments. Its extreme brightness makes it attention-grabbing and ideal for accents, high-visibility applications, sporty branding, and modern, playful palettes; used sparingly it energizes layouts, while overused it can feel overpowering or harsh on the eyes.

color #feff00

#feff00 color RGB value is 254, 255, 0, and the CMYK value is 0.00392, 0.00, 1.00, 0.00. Alternative names for that color are: bat-signal, yellow, laser lemon.

Color Conversion

Name
Values
CSS
RGB(0-255)
254, 255, 0
rgb(254, 255, 0)
CMYK
0.00392, 0.00, 1.00, 0.00
-
sRGB
0.996, 1.00, 0.00
rgb(99.6% 100% 0%)
Adobe® 98 RGB compatible
0.997, 1.00, 0.234
color(a98-rgb 0.997 1 0.234)
HCT
111, 75.6, 97.1
color(--hct 111 52.2% 97.1%)
HSL
60.2, 100, 50.0
hsl(60.2 100% 50%)
HSV
60.2, 100, 100
color(--hsv 60.2 100% 100%)
HWB
60.2, 0.00, 0.00
hwb(60.2 0% 0%)
Lab
97.5, -16.2, 93.3
lab(97.5 -16.2 93.3)
P3
0.997, 1.00, 0.331
color(display-p3 0.997 1 0.331)
XYZ D50
0.817, 0.937, 0.111
color(xyz-d50 0.817 0.937 0.111)

Shades

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Tints

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Tones

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Color Harmonies

HEX:#feff00
RGB:254 255 0
HSL:60.24deg 100% 50%
HEX:#0100ff
RGB:1 0 255
HSL:240.24deg 100% 50%

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