#EFF99B#EFF99B

#EFF99B is a very light, moderate yellow. Relative luminance 0.885; OKLCH L 95.4% C 0.117 H 113.6°. Best body text is #000000 at 18.69:1 contrast (WCAG AA passes).

Color values

HEX	#EFF99B
RGB	rgb(239, 249, 155)
HSL	hsl(66, 89%, 79%)
HSV	hsv(66, 38%, 98%)
CMYK	cmyk(4%, 0%, 37.8%, 2.4%)
CIE-LAB	lab(95.36, -17.16, 44.01)
CIE-LCH	lch(95.36, 47.24, 111.30°)
OKLab	oklab(95.4% -0.047 0.1077)
OKLCH	oklch(95.4% 0.117 113.6)
XYZ	xyz(75.3892, 88.4696, 44.1088)
Luminance	0.8847 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF99B #A59BF9

analogous

#F9D49B #EFF99B #C0F99B

triadic

#EFF99B #9BEFF9 #F99BEF

tetradic

#EFF99B #9BF9D4 #A59BF9 #F99BC0

square

#EFF99B #9BF9D4 #A59BF9 #F99BC0

split-complementary

#EFF99B #9BC0F9 #D49BF9

monochromatic

#DDF228 #E6F661 #EFF99B #F8FCD5 #FAFDE2

Accessibility & contrast

On white

1.12

#EFF99B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.69

#EFF99B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF99B

18.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF99B	#FFFFFF	#000000	##000000
##EFF99B	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)

#FFF194

Deuteranopia (green-blind)

#FFF39F

Tritanopia (blue-blind)

#FAEFE2

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #eff99b;
/* rgb */ color: rgb(239, 249, 155);
/* oklch */ color: oklch(95.4% 0.117 113.6);

Tailwind

colors: {
  custom: {
    50: '#f5fbb9',
    500: '#eff99b',
    950: '#000000',
  },
}

SCSS

$custom: #eff99b;
$custom-light: #f5fbb9;
$custom-dark: #000000;

JSON

{
  "hex": "#eff99b",
  "rgb": {
    "r": 239,
    "g": 249,
    "b": 155
  },
  "hsl": {
    "h": 66.383,
    "s": 88.679,
    "l": 79.216
  },
  "oklch": {
    "l": 0.95396,
    "c": 0.11749,
    "h": 113.6
  },
  "luminance": 0.88469
}

Semantic roles & 50–950 ramp

primary

#EFF99B

secondary

#6C5FD9

accent

#00E519

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFF99B

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

Preview Lab → · Contrast checker → · Palette generator →