#EFF99A#EFF99A

#EFF99A is a very light, moderate yellow. Relative luminance 0.884; OKLCH L 95.4% C 0.119 H 113.6°. Best body text is #000000 at 18.69:1 contrast (WCAG AA passes).

Color values

HEX	#EFF99A
RGB	rgb(239, 249, 154)
HSL	hsl(66, 89%, 79%)
HSV	hsv(66, 38%, 98%)
CMYK	cmyk(4%, 0%, 38.2%, 2.4%)
CIE-LAB	lab(95.34, -17.27, 44.48)
CIE-LCH	lch(95.34, 47.72, 111.22°)
OKLab	oklab(95.38% -0.0474 0.1087)
OKLCH	oklch(95.38% 0.119 113.6)
XYZ	xyz(75.3056, 88.4361, 43.6684)
Luminance	0.8843 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF99A #A49AF9

analogous

#F9D49A #EFF99A #C0F99A

triadic

#EFF99A #9AEFF9 #F99AEF

tetradic

#EFF99A #9AF9D4 #A49AF9 #F99AC0

square

#EFF99A #9AF9D4 #A49AF9 #F99AC0

split-complementary

#EFF99A #9AC0F9 #D49AF9

monochromatic

#DDF226 #E6F660 #EFF99A #F8FCD4 #FAFDE2

Accessibility & contrast

On white

1.12

#EFF99A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.69

#EFF99A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF99A

18.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF99A	#FFFFFF	#000000	##000000
##EFF99A	1.00	1.12	18.69	18.69
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.69	21.00	1.00	1.00
##000000	18.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF193

Deuteranopia (green-blind)

#FFF39E

Tritanopia (blue-blind)

#FAEFE2

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #eff99a;
/* rgb */ color: rgb(239, 249, 154);
/* oklch */ color: oklch(95.4% 0.119 113.6);

Tailwind

colors: {
  custom: {
    50: '#f5fbb9',
    500: '#eff99a',
    950: '#000000',
  },
}

SCSS

$custom: #eff99a;
$custom-light: #f5fbb9;
$custom-dark: #000000;

JSON

{
  "hex": "#eff99a",
  "rgb": {
    "r": 239,
    "g": 249,
    "b": 154
  },
  "hsl": {
    "h": 66.316,
    "s": 88.785,
    "l": 79.02
  },
  "oklch": {
    "l": 0.9538,
    "c": 0.11859,
    "h": 113.6
  },
  "luminance": 0.88435
}

Semantic roles & 50–950 ramp

primary

#EFF99A

secondary

#6B5ED9

accent

#00E518

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFF99A

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

Preview Lab → · Contrast checker → · Palette generator →