#EFF38F#EFF38F

#EFF38F is a very light, vivid yellow. Relative luminance 0.844; OKLCH L 94.0% C 0.123 H 110.5°. Best body text is #000000 at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#EFF38F
RGB	rgb(239, 243, 143)
HSL	hsl(62, 81%, 76%)
HSV	hsv(62, 41%, 95%)
CMYK	cmyk(1.6%, 0%, 41.2%, 4.7%)
CIE-LAB	lab(93.64, -15.52, 47.66)
CIE-LCH	lch(93.64, 50.13, 108.03°)
OKLab	oklab(93.97% -0.0432 0.1154)
OKLCH	oklch(93.97% 0.123 110.5)
XYZ	xyz(72.6061, 84.4364, 38.4543)
Luminance	0.8444 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF38F #938FF3

analogous

#F3C58F #EFF38F #BDF38F

triadic

#EFF38F #8FEFF3 #F38FEF

tetradic

#EFF38F #8FF3C5 #938FF3 #F38FBD

square

#EFF38F #8FF3C5 #938FF3 #F38FBD

split-complementary

#EFF38F #8FBDF3 #C58FF3

monochromatic

#DFE720 #E7ED58 #EFF38F #F7F9C6 #FBFCE3

Accessibility & contrast

On white

1.17

#EFF38F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.89

#EFF38F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF38F

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF38F	#FFFFFF	#000000	##000000
##EFF38F	1.00	1.17	17.89	17.89
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.89	21.00	1.00	1.00
##000000	17.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB87

Deuteranopia (green-blind)

#FFEE94

Tritanopia (blue-blind)

#FBE8DB

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff38f;
/* rgb */ color: rgb(239, 243, 143);
/* oklch */ color: oklch(94.0% 0.123 110.5);

Tailwind

colors: {
  custom: {
    50: '#f6f7b1',
    500: '#eff38f',
    950: '#000000',
  },
}

SCSS

$custom: #eff38f;
$custom-light: #f6f7b1;
$custom-dark: #000000;

JSON

{
  "hex": "#eff38f",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 143
  },
  "hsl": {
    "h": 62.4,
    "s": 80.645,
    "l": 75.686
  },
  "oklch": {
    "l": 0.93974,
    "c": 0.12319,
    "h": 110.5
  },
  "luminance": 0.84435
}

Semantic roles & 50–950 ramp

primary

#EFF38F

secondary

#5B56D0

accent

#09DD11

background

#FFFFFD

surface

#FFFEF8

border

#D7D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFF38F

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

Preview Lab → · Contrast checker → · Palette generator →