#EFF580#EFF580

#EFF580 is a very light, vivid yellow. Relative luminance 0.852; OKLCH L 94.2% C 0.141 H 111.4°. Best body text is #000000 at 18.04:1 contrast (WCAG AA passes).

Color values

HEX	#EFF580
RGB	rgb(239, 245, 128)
HSL	hsl(63, 85%, 73%)
HSV	hsv(63, 48%, 96%)
CMYK	cmyk(2.4%, 0%, 47.8%, 3.9%)
CIE-LAB	lab(93.98, -17.93, 55.18)
CIE-LCH	lch(93.98, 58.02, 108.00°)
OKLab	oklab(94.18% -0.0514 0.131)
OKLCH	oklch(94.18% 0.141 111.4)
XYZ	xyz(72.1466, 85.2154, 33.0655)
Luminance	0.8521 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF580 #8680F5

analogous

#F5C080 #EFF580 #B4F580

triadic

#EFF580 #80EFF5 #F580EF

tetradic

#EFF580 #80F5C0 #8680F5 #F580B4

square

#EFF580 #80F5C0 #8680F5 #F580B4

split-complementary

#EFF580 #80B4F5 #C080F5

monochromatic

#DDE812 #E8F147 #EFF580 #F6F9B9 #FBFDE3

Accessibility & contrast

On white

1.16

#EFF580 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.04

#EFF580 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF580

18.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF580	#FFFFFF	#000000	##000000
##EFF580	1.00	1.16	18.04	18.04
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.04	21.00	1.00	1.00
##000000	18.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC76

Deuteranopia (green-blind)

#FFEF86

Tritanopia (blue-blind)

#FCE9DA

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff580;
/* rgb */ color: rgb(239, 245, 128);
/* oklch */ color: oklch(94.2% 0.141 111.4);

Tailwind

colors: {
  custom: {
    50: '#f6f8a7',
    500: '#eff580',
    950: '#000000',
  },
}

SCSS

$custom: #eff580;
$custom-light: #f6f8a7;
$custom-dark: #000000;

JSON

{
  "hex": "#eff580",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 128
  },
  "hsl": {
    "h": 63.077,
    "s": 85.401,
    "l": 73.137
  },
  "oklch": {
    "l": 0.94183,
    "c": 0.14076,
    "h": 111.4
  },
  "luminance": 0.85214
}

Semantic roles & 50–950 ramp

primary

#EFF580

secondary

#4F48D1

accent

#04E20F

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF580

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

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