#EFF583#EFF583

#EFF583 is a very light, vivid yellow. Relative luminance 0.853; OKLCH L 94.2% C 0.138 H 111.4°. Best body text is #000000 at 18.06:1 contrast (WCAG AA passes).

Color values

HEX	#EFF583
RGB	rgb(239, 245, 131)
HSL	hsl(63, 85%, 74%)
HSV	hsv(63, 47%, 96%)
CMYK	cmyk(2.4%, 0%, 46.5%, 3.9%)
CIE-LAB	lab(94.01, -17.66, 53.83)
CIE-LCH	lch(94.01, 56.65, 108.16°)
OKLab	oklab(94.22% -0.0504 0.1283)
OKLCH	oklch(94.22% 0.138 111.4)
XYZ	xyz(72.3470, 85.2956, 34.1209)
Luminance	0.8529 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF583 #8983F5

analogous

#F5C283 #EFF583 #B6F583

triadic

#EFF583 #83EFF5 #F583EF

tetradic

#EFF583 #83F5C2 #8983F5 #F583B6

square

#EFF583 #83F5C2 #8983F5 #F583B6

split-complementary

#EFF583 #83B6F5 #C283F5

monochromatic

#DFEB13 #E8F04A #EFF583 #F6FABC #FBFDE3

Accessibility & contrast

On white

1.16

#EFF583 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.06

#EFF583 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF583

18.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF583	#FFFFFF	#000000	##000000
##EFF583	1.00	1.16	18.06	18.06
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.06	21.00	1.00	1.00
##000000	18.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC79

Deuteranopia (green-blind)

#FFEF89

Tritanopia (blue-blind)

#FCE9DA

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff583;
/* rgb */ color: rgb(239, 245, 131);
/* oklch */ color: oklch(94.2% 0.138 111.4);

Tailwind

colors: {
  custom: {
    50: '#f6f8a9',
    500: '#eff583',
    950: '#000000',
  },
}

SCSS

$custom: #eff583;
$custom-light: #f6f8a9;
$custom-dark: #000000;

JSON

{
  "hex": "#eff583",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 131
  },
  "hsl": {
    "h": 63.158,
    "s": 85.075,
    "l": 73.725
  },
  "oklch": {
    "l": 0.94221,
    "c": 0.13782,
    "h": 111.4
  },
  "luminance": 0.85294
}

Semantic roles & 50–950 ramp

primary

#EFF583

secondary

#524BD1

accent

#04E210

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF583

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

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