#EFF57A#EFF57A

#EFF57A is a very light, vivid yellow. Relative luminance 0.851; OKLCH L 94.1% C 0.146 H 111.4°. Best body text is #000000 at 18.01:1 contrast (WCAG AA passes).

Color values

HEX	#EFF57A
RGB	rgb(239, 245, 122)
HSL	hsl(63, 86%, 72%)
HSV	hsv(63, 50%, 96%)
CMYK	cmyk(2.4%, 0%, 50.2%, 3.9%)
CIE-LAB	lab(93.91, -18.46, 57.86)
CIE-LCH	lch(93.91, 60.73, 107.69°)
OKLab	oklab(94.11% -0.0535 0.1364)
OKLCH	oklch(94.11% 0.146 111.4)
XYZ	xyz(71.7633, 85.0621, 31.0468)
Luminance	0.8506 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF57A #807AF5

analogous

#F5BE7A #EFF57A #B2F57A

triadic

#EFF57A #7AEFF5 #F57AEF

tetradic

#EFF57A #7AF5BE #807AF5 #F57AB2

square

#EFF57A #7AF5BE #807AF5 #F57AB2

split-complementary

#EFF57A #7AB2F5 #BE7AF5

monochromatic

#D9E311 #E8F141 #EFF57A #F6F9B3 #FCFDE3

Accessibility & contrast

On white

1.17

#EFF57A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.01

#EFF57A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF57A

18.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF57A	#FFFFFF	#000000	##000000
##EFF57A	1.00	1.17	18.01	18.01
#FFFFFF	1.17	1.00	21.00	21.00
#000000	18.01	21.00	1.00	1.00
##000000	18.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC6F

Deuteranopia (green-blind)

#FFEF80

Tritanopia (blue-blind)

#FDE9D9

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff57a;
/* rgb */ color: rgb(239, 245, 122);
/* oklch */ color: oklch(94.1% 0.146 111.4);

Tailwind

colors: {
  custom: {
    50: '#f6f8a3',
    500: '#eff57a',
    950: '#000000',
  },
}

SCSS

$custom: #eff57a;
$custom-light: #f6f8a3;
$custom-dark: #000000;

JSON

{
  "hex": "#eff57a",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 122
  },
  "hsl": {
    "h": 62.927,
    "s": 86.014,
    "l": 71.961
  },
  "oklch": {
    "l": 0.94109,
    "c": 0.14649,
    "h": 111.4
  },
  "luminance": 0.85061
}

Semantic roles & 50–950 ramp

primary

#EFF57A

secondary

#4A43D0

accent

#03E30E

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF57A

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

Preview Lab → · Contrast checker → · Palette generator →