#EFFF83#EFFF83

#EFFF83 is a very light, vivid yellow. Relative luminance 0.915; OKLCH L 96.3% C 0.150 H 115.3°. Best body text is #000000 at 19.30:1 contrast (WCAG AA passes).

Color values

HEX	#EFFF83
RGB	rgb(239, 255, 131)
HSL	hsl(68, 100%, 76%)
HSV	hsv(68, 49%, 100%)
CMYK	cmyk(6.3%, 0%, 48.6%, 0%)
CIE-LAB	lab(96.62, -22.46, 56.96)
CIE-LCH	lch(96.62, 61.23, 111.52°)
OKLab	oklab(96.31% -0.064 0.1352)
OKLCH	oklch(96.31% 0.15 115.3)
XYZ	xyz(75.4544, 91.5104, 35.1567)
Luminance	0.9151 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFF83 #9383FF

analogous

#FFD183 #EFFF83 #B1FF83

triadic

#EFFF83 #83EFFF #FF83EF

tetradic

#EFFF83 #83FFD1 #9383FF #FF83B1

square

#EFFF83 #83FFD1 #9383FF #FF83B1

split-complementary

#EFFF83 #83B1FF #D183FF

monochromatic

#DFFF09 #E7FF46 #EFFF83 #F7FFC0 #FBFFE0

Accessibility & contrast

On white

1.09

#EFFF83 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.30

#EFFF83 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFF83

19.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFF83	#FFFFFF	#000000	##000000
##EFFF83	1.00	1.09	19.30	19.30
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.30	21.00	1.00	1.00
##000000	19.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF478

Deuteranopia (green-blind)

#FFF68A

Tritanopia (blue-blind)

#FBF3E3

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #efff83;
/* rgb */ color: rgb(239, 255, 131);
/* oklch */ color: oklch(96.3% 0.150 115.3);

Tailwind

colors: {
  custom: {
    50: '#f6ffaa',
    500: '#efff83',
    950: '#000000',
  },
}

SCSS

$custom: #efff83;
$custom-light: #f6ffaa;
$custom-dark: #000000;

JSON

{
  "hex": "#efff83",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 131
  },
  "hsl": {
    "h": 67.742,
    "s": 100,
    "l": 75.686
  },
  "oklch": {
    "l": 0.96305,
    "c": 0.14956,
    "h": 115.3
  },
  "luminance": 0.91509
}

Semantic roles & 50–950 ramp

primary

#EFFF83

secondary

#5B48DF

accent

#00E61E

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171810

muted

#858681

Preview Lab

Preview with #EFFF83

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

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