#EFFF91#EFFF91

#EFFF91 is a very light, vivid yellow. Relative luminance 0.919; OKLCH L 96.5% C 0.136 H 115.8°. Best body text is #000000 at 19.38:1 contrast (WCAG AA passes).

Color values

HEX	#EFFF91
RGB	rgb(239, 255, 145)
HSL	hsl(69, 100%, 78%)
HSV	hsv(69, 43%, 100%)
CMYK	cmyk(6.3%, 0%, 43.1%, 0%)
CIE-LAB	lab(96.79, -21.11, 50.63)
CIE-LCH	lch(96.79, 54.86, 112.64°)
OKLab	oklab(96.49% -0.059 0.1221)
OKLCH	oklch(96.49% 0.136 115.8)
XYZ	xyz(76.4681, 91.9159, 40.4958)
Luminance	0.9192 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFF91 #A191FF

analogous

#FFD891 #EFFF91 #B8FF91

triadic

#EFFF91 #91EFFF #FF91EF

tetradic

#EFFF91 #91FFD8 #A191FF #FF91B8

square

#EFFF91 #91FFD8 #A191FF #FF91B8

split-complementary

#EFFF91 #91B8FF #D891FF

monochromatic

#DDFF17 #E6FF54 #EFFF91 #F8FFCE #FBFFE0

Accessibility & contrast

On white

1.08

#EFFF91 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.38

#EFFF91 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFF91

19.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFF91	#FFFFFF	#000000	##000000
##EFFF91	1.00	1.08	19.38	19.38
#FFFFFF	1.08	1.00	21.00	21.00
#000000	19.38	21.00	1.00	1.00
##000000	19.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF588

Deuteranopia (green-blind)

#FFF796

Tritanopia (blue-blind)

#FAF4E5

Achromatopsia (no color)

#F6F6F6

Design tokens & code

CSS

--color: #efff91;
/* rgb */ color: rgb(239, 255, 145);
/* oklch */ color: oklch(96.5% 0.136 115.8);

Tailwind

colors: {
  custom: {
    50: '#f6ffb3',
    500: '#efff91',
    950: '#000000',
  },
}

SCSS

$custom: #efff91;
$custom-light: #f6ffb3;
$custom-dark: #000000;

JSON

{
  "hex": "#efff91",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 145
  },
  "hsl": {
    "h": 68.727,
    "s": 100,
    "l": 78.431
  },
  "oklch": {
    "l": 0.96491,
    "c": 0.13564,
    "h": 115.8
  },
  "luminance": 0.91915
}

Semantic roles & 50–950 ramp

primary

#EFFF91

secondary

#6853E1

accent

#00E621

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171811

muted

#858681

Preview Lab

Preview with #EFFF91

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

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