#EFF588#EFF588

#EFF588 is a very light, vivid yellow. Relative luminance 0.854; OKLCH L 94.3% C 0.133 H 111.5°. Best body text is #000000 at 18.09:1 contrast (WCAG AA passes).

Color values

HEX	#EFF588
RGB	rgb(239, 245, 136)
HSL	hsl(63, 84%, 75%)
HSV	hsv(63, 44%, 96%)
CMYK	cmyk(2.4%, 0%, 44.5%, 3.9%)
CIE-LAB	lab(94.07, -17.19, 51.55)
CIE-LCH	lch(94.07, 54.33, 108.44°)
OKLab	oklab(94.29% -0.0486 0.1236)
OKLCH	oklch(94.29% 0.133 111.5)
XYZ	xyz(72.6941, 85.4344, 35.9488)
Luminance	0.8543 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF588 #8E88F5

analogous

#F5C588 #EFF588 #B8F588

triadic

#EFF588 #88EFF5 #F588EF

tetradic

#EFF588 #88F5C5 #8E88F5 #F588B8

square

#EFF588 #88F5C5 #8E88F5 #F588B8

split-complementary

#EFF588 #88B8F5 #C588F5

monochromatic

#E0EC17 #E7F050 #EFF588 #F7FAC0 #FBFDE3

Accessibility & contrast

On white

1.16

#EFF588 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.09

#EFF588 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF588

18.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF588	#FFFFFF	#000000	##000000
##EFF588	1.00	1.16	18.09	18.09
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.09	21.00	1.00	1.00
##000000	18.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC7F

Deuteranopia (green-blind)

#FFF08D

Tritanopia (blue-blind)

#FCE9DB

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff588;
/* rgb */ color: rgb(239, 245, 136);
/* oklch */ color: oklch(94.3% 0.133 111.5);

Tailwind

colors: {
  custom: {
    50: '#f6f8ad',
    500: '#eff588',
    950: '#000000',
  },
}

SCSS

$custom: #eff588;
$custom-light: #f6f8ad;
$custom-dark: #000000;

JSON

{
  "hex": "#eff588",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 136
  },
  "hsl": {
    "h": 63.303,
    "s": 84.496,
    "l": 74.706
  },
  "oklch": {
    "l": 0.94288,
    "c": 0.1328,
    "h": 111.5
  },
  "luminance": 0.85433
}

Semantic roles & 50–950 ramp

primary

#EFF588

secondary

#564FD2

accent

#05E111

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF588

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

Preview Lab → · Contrast checker → · Palette generator →