#EFF37A#EFF37A

#EFF37A is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 93.7% C 0.144 H 110.6°. Best body text is #000000 at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#EFF37A
RGB	rgb(239, 243, 122)
HSL	hsl(62, 83%, 72%)
HSV	hsv(62, 50%, 95%)
CMYK	cmyk(1.6%, 0%, 49.8%, 4.7%)
CIE-LAB	lab(93.39, -17.49, 57.25)
CIE-LCH	lch(93.39, 59.86, 106.99°)
OKLab	oklab(93.69% -0.0507 0.1351)
OKLCH	oklch(93.69% 0.144 110.6)
XYZ	xyz(71.1616, 83.8586, 30.8462)
Luminance	0.8386 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF37A #7E7AF3

analogous

#F3BA7A #EFF37A #B3F37A

triadic

#EFF37A #7AEFF3 #F37AEF

tetradic

#EFF37A #7AF3BA #7E7AF3 #F37AB3

square

#EFF37A #7AF3BA #7E7AF3 #F37AB3

split-complementary

#EFF37A #7AB3F3 #BA7AF3

monochromatic

#D8DF14 #E8EE42 #EFF37A #F6F8B2 #FCFCE3

Accessibility & contrast

On white

1.18

#EFF37A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.77

#EFF37A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF37A

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF37A	#FFFFFF	#000000	##000000
##EFF37A	1.00	1.18	17.77	17.77
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.77	21.00	1.00	1.00
##000000	17.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA6F

Deuteranopia (green-blind)

#FFEE80

Tritanopia (blue-blind)

#FDE7D7

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff37a;
/* rgb */ color: rgb(239, 243, 122);
/* oklch */ color: oklch(93.7% 0.144 110.6);

Tailwind

colors: {
  custom: {
    50: '#f6f6a3',
    500: '#eff37a',
    950: '#000000',
  },
}

SCSS

$custom: #eff37a;
$custom-light: #f6f6a3;
$custom-dark: #000000;

JSON

{
  "hex": "#eff37a",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 122
  },
  "hsl": {
    "h": 61.983,
    "s": 83.448,
    "l": 71.569
  },
  "oklch": {
    "l": 0.93693,
    "c": 0.14426,
    "h": 110.6
  },
  "luminance": 0.83857
}

Semantic roles & 50–950 ramp

primary

#EFF37A

secondary

#4843CE

accent

#06E00D

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF37A

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

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