#FCFF5B#FCFF5B

#FCFF5B is a very light, vivid yellow. Relative luminance 0.930; OKLCH L 96.9% C 0.180 H 110.3°. Best body text is #000000 at 19.59:1 contrast (WCAG AA passes).

Color values

HEX	#FCFF5B
RGB	rgb(252, 255, 91)
HSL	hsl(61, 100%, 68%)
HSV	hsv(61, 64%, 100%)
CMYK	cmyk(1.2%, 0%, 64.3%, 0%)
CIE-LAB	lab(97.22, -20.29, 74.82)
CIE-LCH	lch(97.22, 77.52, 105.18°)
OKLab	oklab(96.9% -0.0625 0.1686)
OKLCH	oklch(96.9% 0.18 110.3)
XYZ	xyz(77.7957, 92.9728, 23.7430)
Luminance	0.9297 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FCFF5B #5E5BFF

analogous

#FFB05B #FCFF5B #AAFF5B

triadic

#FCFF5B #5BFCFF #FF5BFC

tetradic

#FCFF5B #5BFFB0 #5E5BFF #FF5BAA

square

#FCFF5B #5BFFB0 #5E5BFF #FF5BAA

split-complementary

#FCFF5B #5BAAFF #B05BFF

monochromatic

#DCE000 #FBFF1E #FCFF5B #FDFF98 #FEFFD5

Accessibility & contrast

On white

1.07

#FCFF5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.59

#FCFF5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FCFF5B

19.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FCFF5B	#FFFFFF	#000000	##000000
##FCFF5B	1.00	1.07	19.59	19.59
#FFFFFF	1.07	1.00	21.00	21.00
#000000	19.59	21.00	1.00	1.00
##000000	19.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF444

Deuteranopia (green-blind)

#FFF966

Tritanopia (blue-blind)

#FFF0DE

Achromatopsia (no color)

#F7F7F7

Design tokens & code

CSS

--color: #fcff5b;
/* rgb */ color: rgb(252, 255, 91);
/* oklch */ color: oklch(96.9% 0.180 110.3);

Tailwind

colors: {
  custom: {
    50: '#ffff91',
    500: '#fcff5b',
    950: '#000000',
  },
}

SCSS

$custom: #fcff5b;
$custom-light: #ffff91;
$custom-dark: #000000;

JSON

{
  "hex": "#fcff5b",
  "rgb": {
    "r": 252,
    "g": 255,
    "b": 91
  },
  "hsl": {
    "h": 61.098,
    "s": 100,
    "l": 67.843
  },
  "oklch": {
    "l": 0.96902,
    "c": 0.17981,
    "h": 110.3
  },
  "luminance": 0.92971
}

Semantic roles & 50–950 ramp

primary

#FCFF5B

secondary

#2926D8

accent

#00E604

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #FCFF5B

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

Preview Lab → · Contrast checker → · Palette generator →