#FFFF42#FFFF42

#FFFF42 is a very light, vivid yellow. Relative luminance 0.932; OKLCH L 97.0% C 0.194 H 109.5°. Best body text is #000000 at 19.63:1 contrast (WCAG AA passes).

Color values

HEX	#FFFF42
RGB	rgb(255, 255, 66)
HSL	hsl(60, 100%, 63%)
HSV	hsv(60, 74%, 100%)
CMYK	cmyk(0%, 0%, 74.1%, 0%)
CIE-LAB	lab(97.30, -20.27, 83.52)
CIE-LCH	lch(97.30, 85.95, 103.64°)
OKLab	oklab(96.98% -0.0648 0.1828)
OKLCH	oklch(96.98% 0.194 109.5)
XYZ	xyz(77.9863, 93.1757, 19.0299)
Luminance	0.9317 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFFF42 #4242FF

analogous

#FFA042 #FFFF42 #A0FF42

triadic

#FFFF42 #42FFFF #FF42FF

tetradic

#FFFF42 #42FFA0 #4242FF #FF42A0

square

#FFFF42 #42FFA0 #4242FF #FF42A0

split-complementary

#FFFF42 #42A0FF #A042FF

monochromatic

#C7C700 #FFFF05 #FFFF42 #FFFF7F #FFFFBC

Accessibility & contrast

On white

1.07

#FFFF42 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.63

#FFFF42 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFFF42

19.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFFF42	#FFFFFF	#000000	##000000
##FFFF42	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)

#FFF410

Deuteranopia (green-blind)

#FFFA52

Tritanopia (blue-blind)

#FFEFDC

Achromatopsia (no color)

#F7F7F7

Design tokens & code

CSS

--color: #ffff42;
/* rgb */ color: rgb(255, 255, 66);
/* oklch */ color: oklch(97.0% 0.194 109.5);

Tailwind

colors: {
  custom: {
    50: '#ffff84',
    500: '#ffff42',
    950: '#000000',
  },
}

SCSS

$custom: #ffff42;
$custom-light: #ffff84;
$custom-dark: #000000;

JSON

{
  "hex": "#ffff42",
  "rgb": {
    "r": 255,
    "g": 255,
    "b": 66
  },
  "hsl": {
    "h": 60,
    "s": 100,
    "l": 62.941
  },
  "oklch": {
    "l": 0.96976,
    "c": 0.19398,
    "h": 109.5
  },
  "luminance": 0.93173
}

Semantic roles & 50–950 ramp

primary

#FFFF42

secondary

#2222C3

accent

#00E600

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#19170C

muted

#87857F

Preview Lab

Preview with #FFFF42

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

Preview Lab → · Contrast checker → · Palette generator →