#FEFF00#FEFF00

#FEFF00 is a very light, highly saturated yellow. Relative luminance 0.926; OKLCH L 96.7% C 0.211 H 110.1°. Best body text is #000000 at 19.52:1 contrast (WCAG AA passes).

Color values

HEX	#FEFF00
RGB	rgb(254, 255, 0)
HSL	hsl(60, 100%, 50%)
HSV	hsv(60, 100%, 100%)
CMYK	cmyk(0.4%, 0%, 100%, 0%)
CIE-LAB	lab(97.06, -21.96, 94.39)
CIE-LCH	lch(97.06, 96.91, 103.10°)
OKLab	oklab(96.72% -0.0725 0.1984)
OKLCH	oklch(96.72% 0.211 110.1)
XYZ	xyz(76.6363, 92.5933, 13.8354)
Luminance	0.9259 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FEFF00 #0100FF

analogous

#FF8000 #FEFF00 #7FFF00

triadic

#FEFF00 #00FEFF #FF00FE

tetradic

#FEFF00 #00FF80 #0100FF #FF007F

square

#FEFF00 #00FF80 #0100FF #FF007F

split-complementary

#FEFF00 #007FFF #8000FF

monochromatic

#848500 #C1C200 #FEFF00 #FEFF3D #FEFF7A

Accessibility & contrast

On white

1.08

#FEFF00 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.52

#FEFF00 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FEFF00

19.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FEFF00	#FFFFFF	#000000	##000000
##FEFF00	1.00	1.08	19.52	19.52
#FFFFFF	1.08	1.00	21.00	21.00
#000000	19.52	21.00	1.00	1.00
##000000	19.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF300

Deuteranopia (green-blind)

#FFF931

Tritanopia (blue-blind)

#FFEED9

Achromatopsia (no color)

#F7F7F7

Design tokens & code

CSS

--color: #feff00;
/* rgb */ color: rgb(254, 255, 0);
/* oklch */ color: oklch(96.7% 0.211 110.1);

Tailwind

colors: {
  custom: {
    50: '#ffff73',
    500: '#feff00',
    950: '#000000',
  },
}

SCSS

$custom: #feff00;
$custom-light: #ffff73;
$custom-dark: #000000;

JSON

{
  "hex": "#feff00",
  "rgb": {
    "r": 254,
    "g": 255,
    "b": 0
  },
  "hsl": {
    "h": 60.235,
    "s": 100,
    "l": 50
  },
  "oklch": {
    "l": 0.96718,
    "c": 0.21124,
    "h": 110.1
  },
  "luminance": 0.92591
}

Semantic roles & 50–950 ramp

primary

#FEFF00

secondary

#19188B

accent

#29FF2A

background

#FFFFFB

surface

#FFFFF2

border

#D7D7CC

text

#19170A

muted

#87857D

Preview Lab

Preview with #FEFF00

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →