#EFF582#EFF582

#EFF582 is a very light, vivid yellow. Relative luminance 0.853; OKLCH L 94.2% C 0.139 H 111.4°. Best body text is #000000 at 18.05:1 contrast (WCAG AA passes).

Color values

HEX	#EFF582
RGB	rgb(239, 245, 130)
HSL	hsl(63, 85%, 74%)
HSV	hsv(63, 47%, 96%)
CMYK	cmyk(2.4%, 0%, 46.9%, 3.9%)
CIE-LAB	lab(94.00, -17.75, 54.28)
CIE-LCH	lch(94.00, 57.11, 108.11°)
OKLab	oklab(94.21% -0.0507 0.1292)
OKLCH	oklch(94.21% 0.139 111.4)
XYZ	xyz(72.2796, 85.2686, 33.7657)
Luminance	0.8527 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF582 #8882F5

analogous

#F5C182 #EFF582 #B5F582

triadic

#EFF582 #82EFF5 #F582EF

tetradic

#EFF582 #82F5C1 #8882F5 #F582B5

square

#EFF582 #82F5C1 #8882F5 #F582B5

split-complementary

#EFF582 #82B5F5 #C182F5

monochromatic

#DFEA13 #E8F049 #EFF582 #F6FABB #FBFDE3

Accessibility & contrast

On white

1.16

#EFF582 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.05

#EFF582 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF582

18.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF582	#FFFFFF	#000000	##000000
##EFF582	1.00	1.16	18.05	18.05
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.05	21.00	1.00	1.00
##000000	18.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC78

Deuteranopia (green-blind)

#FFEF88

Tritanopia (blue-blind)

#FCE9DA

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff582;
/* rgb */ color: rgb(239, 245, 130);
/* oklch */ color: oklch(94.2% 0.139 111.4);

Tailwind

colors: {
  custom: {
    50: '#f6f8a9',
    500: '#eff582',
    950: '#000000',
  },
}

SCSS

$custom: #eff582;
$custom-light: #f6f8a9;
$custom-dark: #000000;

JSON

{
  "hex": "#eff582",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 130
  },
  "hsl": {
    "h": 63.13,
    "s": 85.185,
    "l": 73.529
  },
  "oklch": {
    "l": 0.94208,
    "c": 0.1388,
    "h": 111.4
  },
  "luminance": 0.85267
}

Semantic roles & 50–950 ramp

primary

#EFF582

secondary

#514AD1

accent

#04E20F

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF582

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

Preview Lab → · Contrast checker → · Palette generator →