#FFFF99#FFFF99

#FFFF99 is a very light, vivid yellow. Relative luminance 0.951; OKLCH L 97.8% C 0.124 H 108.5°. Best body text is #000000 at 20.02:1 contrast (WCAG AA passes).

Color values

HEX	#FFFF99
RGB	rgb(255, 255, 153)
HSL	hsl(60, 100%, 80%)
HSV	hsv(60, 40%, 100%)
CMYK	cmyk(0%, 0%, 40%, 0%)
CIE-LAB	lab(98.07, -14.23, 48.66)
CIE-LCH	lch(98.07, 50.70, 106.30°)
OKLab	oklab(97.84% -0.0395 0.118)
OKLCH	oklch(97.84% 0.124 108.5)
XYZ	xyz(82.7510, 95.0816, 44.1242)
Luminance	0.9508 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFFF99 #9999FF

analogous

#FFCC99 #FFFF99 #CCFF99

triadic

#FFFF99 #99FFFF #FF99FF

tetradic

#FFFF99 #99FFCC #9999FF #FF99CC

square

#FFFF99 #99FFCC #9999FF #FF99CC

split-complementary

#FFFF99 #99CCFF #CC99FF

monochromatic

#FFFF1F #FFFF5C #FFFF99 #FFFFD6 #FFFFE0

Accessibility & contrast

On white

1.05

#FFFF99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

20.02

#FFFF99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFFF99

20.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFFF99	#FFFFFF	#000000	##000000
##FFFF99	1.00	1.05	20.02	20.02
#FFFFFF	1.05	1.00	21.00	21.00
#000000	20.02	21.00	1.00	1.00
##000000	20.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF791

Deuteranopia (green-blind)

#FFFB9E

Tritanopia (blue-blind)

#FFF3E6

Achromatopsia (no color)

#F9F9F9

Design tokens & code

CSS

--color: #ffff99;
/* rgb */ color: rgb(255, 255, 153);
/* oklch */ color: oklch(97.8% 0.124 108.5);

Tailwind

colors: {
  custom: {
    50: '#ffffb8',
    500: '#ffff99',
    950: '#000000',
  },
}

SCSS

$custom: #ffff99;
$custom-light: #ffffb8;
$custom-dark: #000000;

JSON

{
  "hex": "#ffff99",
  "rgb": {
    "r": 255,
    "g": 255,
    "b": 153
  },
  "hsl": {
    "h": 60,
    "s": 100,
    "l": 80
  },
  "oklch": {
    "l": 0.97835,
    "c": 0.12444,
    "h": 108.5
  },
  "luminance": 0.9508
}

Semantic roles & 50–950 ramp

primary

#FFFF99

secondary

#5A5AE2

accent

#00E600

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#181711

muted

#868581

Preview Lab

Preview with #FFFF99

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

Preview Lab → · Contrast checker → · Palette generator →