#FEFF66#FEFF66

#FEFF66 is a very light, vivid yellow. Relative luminance 0.935; OKLCH L 97.2% C 0.171 H 109.6°. Best body text is #000000 at 19.71:1 contrast (WCAG AA passes).

Color values

HEX	#FEFF66
RGB	rgb(254, 255, 102)
HSL	hsl(60, 100%, 70%)
HSV	hsv(60, 60%, 100%)
CMYK	cmyk(0.4%, 0%, 60%, 0%)
CIE-LAB	lab(97.45, -18.84, 70.80)
CIE-LCH	lch(97.45, 73.26, 104.90°)
OKLab	oklab(97.15% -0.0574 0.1616)
OKLCH	oklch(97.15% 0.171 109.6)
XYZ	xyz(79.0337, 93.5523, 26.4619)
Luminance	0.9355 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FEFF66 #6766FF

analogous

#FFB366 #FEFF66 #B2FF66

triadic

#FEFF66 #66FEFF #FF66FE

tetradic

#FEFF66 #66FFB3 #6766FF #FF66B2

square

#FEFF66 #66FFB3 #6766FF #FF66B2

split-complementary

#FEFF66 #66B2FF #B366FF

monochromatic

#E9EB00 #FEFF29 #FEFF66 #FEFFA3 #FFFFE0

Accessibility & contrast

On white

1.07

#FEFF66 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.71

#FEFF66 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FEFF66

19.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FEFF66	#FFFFFF	#000000	##000000
##FEFF66	1.00	1.07	19.71	19.71
#FFFFFF	1.07	1.00	21.00	21.00
#000000	19.71	21.00	1.00	1.00
##000000	19.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF554

Deuteranopia (green-blind)

#FFFA6F

Tritanopia (blue-blind)

#FFF0DF

Achromatopsia (no color)

#F8F8F8

Design tokens & code

CSS

--color: #feff66;
/* rgb */ color: rgb(254, 255, 102);
/* oklch */ color: oklch(97.2% 0.171 109.6);

Tailwind

colors: {
  custom: {
    50: '#ffff98',
    500: '#feff66',
    950: '#000000',
  },
}

SCSS

$custom: #feff66;
$custom-light: #ffff98;
$custom-dark: #000000;

JSON

{
  "hex": "#feff66",
  "rgb": {
    "r": 254,
    "g": 255,
    "b": 102
  },
  "hsl": {
    "h": 60.392,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.97153,
    "c": 0.17149,
    "h": 109.6
  },
  "luminance": 0.9355
}

Semantic roles & 50–950 ramp

primary

#FEFF66

secondary

#302FDA

accent

#00E601

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #FEFF66

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

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