#FDFF5B#FDFF5B

#FDFF5B is a very light, vivid yellow. Relative luminance 0.932; OKLCH L 97.0% C 0.180 H 110.0°. Best body text is #000000 at 19.63:1 contrast (WCAG AA passes).

Color values

HEX	#FDFF5B
RGB	rgb(253, 255, 91)
HSL	hsl(61, 100%, 68%)
HSV	hsv(61, 64%, 100%)
CMYK	cmyk(0.8%, 0%, 64.3%, 0%)
CIE-LAB	lab(97.29, -19.89, 74.92)
CIE-LCH	lch(97.29, 77.52, 104.87°)
OKLab	oklab(96.98% -0.0614 0.1688)
OKLCH	oklch(96.98% 0.18 110)
XYZ	xyz(78.1588, 93.1601, 23.7600)
Luminance	0.9316 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FDFF5B #5D5BFF

analogous

#FFAF5B #FDFF5B #ABFF5B

triadic

#FDFF5B #5BFDFF #FF5BFD

tetradic

#FDFF5B #5BFFAF #5D5BFF #FF5BAB

square

#FDFF5B #5BFFAF #5D5BFF #FF5BAB

split-complementary

#FDFF5B #5BABFF #AF5BFF

monochromatic

#DDE000 #FCFF1E #FDFF5B #FEFF98 #FEFFD5

Accessibility & contrast

On white

1.07

#FDFF5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.63

#FDFF5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FDFF5B

19.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FDFF5B	#FFFFFF	#000000	##000000
##FDFF5B	1.00	1.07	19.63	19.63
#FFFFFF	1.07	1.00	21.00	21.00
#000000	19.63	21.00	1.00	1.00
##000000	19.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF544

Deuteranopia (green-blind)

#FFFA66

Tritanopia (blue-blind)

#FFF0DE

Achromatopsia (no color)

#F7F7F7

Design tokens & code

CSS

--color: #fdff5b;
/* rgb */ color: rgb(253, 255, 91);
/* oklch */ color: oklch(97.0% 0.180 110.0);

Tailwind

colors: {
  custom: {
    50: '#ffff91',
    500: '#fdff5b',
    950: '#000000',
  },
}

SCSS

$custom: #fdff5b;
$custom-light: #ffff91;
$custom-dark: #000000;

JSON

{
  "hex": "#fdff5b",
  "rgb": {
    "r": 253,
    "g": 255,
    "b": 91
  },
  "hsl": {
    "h": 60.732,
    "s": 100,
    "l": 67.843
  },
  "oklch": {
    "l": 0.96981,
    "c": 0.17962,
    "h": 110
  },
  "luminance": 0.93158
}

Semantic roles & 50–950 ramp

primary

#FDFF5B

secondary

#2826D8

accent

#00E603

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#19170D

muted

#87857F

Preview Lab

Preview with #FDFF5B

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

Preview Lab → · Contrast checker → · Palette generator →