#EFF37F#EFF37F

#EFF37F is a very light, vivid yellow. Relative luminance 0.840; OKLCH L 93.8% C 0.139 H 110.6°. Best body text is #000000 at 17.80:1 contrast (WCAG AA passes).

Color values

HEX	#EFF37F
RGB	rgb(239, 243, 127)
HSL	hsl(62, 83%, 73%)
HSV	hsv(62, 48%, 95%)
CMYK	cmyk(1.6%, 0%, 47.7%, 4.7%)
CIE-LAB	lab(93.44, -17.05, 55.01)
CIE-LCH	lch(93.44, 57.59, 107.22°)
OKLab	oklab(93.76% -0.049 0.1306)
OKLCH	oklch(93.76% 0.139 110.6)
XYZ	xyz(71.4794, 83.9857, 32.5200)
Luminance	0.8398 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF37F #837FF3

analogous

#F3BD7F #EFF37F #B5F37F

triadic

#EFF37F #7FEFF3 #F37FEF

tetradic

#EFF37F #7FF3BD #837FF3 #F37FB5

square

#EFF37F #7FF3BD #837FF3 #F37FB5

split-complementary

#EFF37F #7FB5F3 #BD7FF3

monochromatic

#DBE215 #E8EE47 #EFF37F #F6F8B7 #FCFCE3

Accessibility & contrast

On white

1.18

#EFF37F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.80

#EFF37F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF37F

17.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF37F	#FFFFFF	#000000	##000000
##EFF37F	1.00	1.18	17.80	17.80
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.80	21.00	1.00	1.00
##000000	17.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA75

Deuteranopia (green-blind)

#FFEE85

Tritanopia (blue-blind)

#FCE7D8

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff37f;
/* rgb */ color: rgb(239, 243, 127);
/* oklch */ color: oklch(93.8% 0.139 110.6);

Tailwind

colors: {
  custom: {
    50: '#f6f6a7',
    500: '#eff37f',
    950: '#000000',
  },
}

SCSS

$custom: #eff37f;
$custom-light: #f6f6a7;
$custom-dark: #000000;

JSON

{
  "hex": "#eff37f",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 127
  },
  "hsl": {
    "h": 62.069,
    "s": 82.857,
    "l": 72.549
  },
  "oklch": {
    "l": 0.93755,
    "c": 0.13947,
    "h": 110.6
  },
  "luminance": 0.83984
}

Semantic roles & 50–950 ramp

primary

#EFF37F

secondary

#4D48CE

accent

#06DF0E

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#171710

muted

#858580

Preview Lab

Preview with #EFF37F

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

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