#EFF57F#EFF57F

#EFF57F is a very light, vivid yellow. Relative luminance 0.852; OKLCH L 94.2% C 0.142 H 111.4°. Best body text is #000000 at 18.04:1 contrast (WCAG AA passes).

Color values

HEX	#EFF57F
RGB	rgb(239, 245, 127)
HSL	hsl(63, 86%, 73%)
HSV	hsv(63, 48%, 96%)
CMYK	cmyk(2.4%, 0%, 48.2%, 3.9%)
CIE-LAB	lab(93.96, -18.02, 55.63)
CIE-LCH	lch(93.96, 58.48, 107.95°)
OKLab	oklab(94.17% -0.0518 0.1319)
OKLCH	oklch(94.17% 0.142 111.4)
XYZ	xyz(72.0811, 85.1892, 32.7206)
Luminance	0.8519 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF57F #857FF5

analogous

#F5C07F #EFF57F #B4F57F

triadic

#EFF57F #7FEFF5 #F57FEF

tetradic

#EFF57F #7FF5C0 #857FF5 #F57FB4

square

#EFF57F #7FF5C0 #857FF5 #F57FB4

split-complementary

#EFF57F #7FB4F5 #C07FF5

monochromatic

#DDE812 #E8F146 #EFF57F #F6F9B8 #FBFDE3

Accessibility & contrast

On white

1.16

#EFF57F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.04

#EFF57F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF57F

18.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF57F	#FFFFFF	#000000	##000000
##EFF57F	1.00	1.16	18.04	18.04
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.04	21.00	1.00	1.00
##000000	18.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC74

Deuteranopia (green-blind)

#FFEF85

Tritanopia (blue-blind)

#FCE9DA

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff57f;
/* rgb */ color: rgb(239, 245, 127);
/* oklch */ color: oklch(94.2% 0.142 111.4);

Tailwind

colors: {
  custom: {
    50: '#f6f8a7',
    500: '#eff57f',
    950: '#000000',
  },
}

SCSS

$custom: #eff57f;
$custom-light: #f6f8a7;
$custom-dark: #000000;

JSON

{
  "hex": "#eff57f",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 127
  },
  "hsl": {
    "h": 63.051,
    "s": 85.507,
    "l": 72.941
  },
  "oklch": {
    "l": 0.9417,
    "c": 0.14173,
    "h": 111.4
  },
  "luminance": 0.85188
}

Semantic roles & 50–950 ramp

primary

#EFF57F

secondary

#4E47D1

accent

#03E20F

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#171710

muted

#858580

Preview Lab

Preview with #EFF57F

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

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