#EFF388#EFF388

#EFF388 is a very light, vivid yellow. Relative luminance 0.842; OKLCH L 93.9% C 0.130 H 110.5°. Best body text is #000000 at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#EFF388
RGB	rgb(239, 243, 136)
HSL	hsl(62, 82%, 74%)
HSV	hsv(62, 44%, 95%)
CMYK	cmyk(1.6%, 0%, 44%, 4.7%)
CIE-LAB	lab(93.55, -16.21, 50.91)
CIE-LCH	lch(93.55, 53.43, 107.67°)
OKLab	oklab(93.87% -0.0458 0.1222)
OKLCH	oklch(93.87% 0.13 110.5)
XYZ	xyz(72.0923, 84.2309, 35.7482)
Luminance	0.8423 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF388 #8C88F3

analogous

#F3C288 #EFF388 #BAF388

triadic

#EFF388 #88EFF3 #F388EF

tetradic

#EFF388 #88F3C2 #8C88F3 #F388BA

square

#EFF388 #88F3C2 #8C88F3 #F388BA

split-complementary

#EFF388 #88BAF3 #C288F3

monochromatic

#E0E819 #E8ED50 #EFF388 #F6F9C0 #FBFCE3

Accessibility & contrast

On white

1.18

#EFF388 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.85

#EFF388 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF388

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF388	#FFFFFF	#000000	##000000
##EFF388	1.00	1.18	17.85	17.85
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.85	21.00	1.00	1.00
##000000	17.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB7F

Deuteranopia (green-blind)

#FFEE8D

Tritanopia (blue-blind)

#FCE7DA

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff388;
/* rgb */ color: rgb(239, 243, 136);
/* oklch */ color: oklch(93.9% 0.130 110.5);

Tailwind

colors: {
  custom: {
    50: '#f6f7ac',
    500: '#eff388',
    950: '#000000',
  },
}

SCSS

$custom: #eff388;
$custom-light: #f6f7ac;
$custom-dark: #000000;

JSON

{
  "hex": "#eff388",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 136
  },
  "hsl": {
    "h": 62.243,
    "s": 81.679,
    "l": 74.314
  },
  "oklch": {
    "l": 0.93874,
    "c": 0.13048,
    "h": 110.5
  },
  "luminance": 0.84229
}

Semantic roles & 50–950 ramp

primary

#EFF388

secondary

#5550CF

accent

#07DE0F

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF388

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

Preview Lab → · Contrast checker → · Palette generator →