#FFEF99#FFEF99

#FFEF99 is a very light, moderate yellow. Relative luminance 0.853; OKLCH L 94.6% C 0.108 H 99.0°. Best body text is #000000 at 18.06:1 contrast (WCAG AA passes).

Color values

HEX	#FFEF99
RGB	rgb(255, 239, 153)
HSL	hsl(51, 100%, 80%)
HSV	hsv(51, 40%, 100%)
CMYK	cmyk(0%, 6.3%, 40%, 0%)
CIE-LAB	lab(94.01, -6.35, 43.52)
CIE-LCH	lch(94.01, 43.98, 98.30°)
OKLab	oklab(94.62% -0.0168 0.1063)
OKLCH	oklch(94.62% 0.108 99)
XYZ	xyz(77.8579, 85.2953, 42.4932)
Luminance	0.8529 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFEF99 #99A9FF

analogous

#FFBC99 #FFEF99 #DCFF99

triadic

#FFEF99 #99FFEF #EF99FF

tetradic

#FFEF99 #99FFBC #99A9FF #FF99DC

square

#FFEF99 #99FFBC #99A9FF #FF99DC

split-complementary

#FFEF99 #99DCFF #BC99FF

monochromatic

#FFDC1F #FFE55C #FFEF99 #FFF9D6 #FFFAE0

Accessibility & contrast

On white

1.16

#FFEF99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.06

#FFEF99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFEF99

18.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFEF99	#FFFFFF	#000000	##000000
##FFEF99	1.00	1.16	18.06	18.06
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.06	21.00	1.00	1.00
##000000	18.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA93

Deuteranopia (green-blind)

#FFF19C

Tritanopia (blue-blind)

#FFE4DA

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #ffef99;
/* rgb */ color: rgb(255, 239, 153);
/* oklch */ color: oklch(94.6% 0.108 99.0);

Tailwind

colors: {
  custom: {
    50: '#fff4b8',
    500: '#ffef99',
    950: '#000000',
  },
}

SCSS

$custom: #ffef99;
$custom-light: #fff4b8;
$custom-dark: #000000;

JSON

{
  "hex": "#ffef99",
  "rgb": {
    "r": 255,
    "g": 239,
    "b": 153
  },
  "hsl": {
    "h": 50.588,
    "s": 100,
    "l": 80
  },
  "oklch": {
    "l": 0.94618,
    "c": 0.10765,
    "h": 99
  },
  "luminance": 0.85293
}

Semantic roles & 50–950 ramp

primary

#FFEF99

secondary

#5A70E2

accent

#24E600

background

#FFFFFD

surface

#FFFEF8

border

#D7D6D1

text

#181711

muted

#868581

Preview Lab

Preview with #FFEF99

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

Preview Lab → · Contrast checker → · Palette generator →