#EFFF90#EFFF90

#EFFF90 is a very light, vivid yellow. Relative luminance 0.919; OKLCH L 96.5% C 0.137 H 115.7°. Best body text is #000000 at 19.38:1 contrast (WCAG AA passes).

Color values

HEX	#EFFF90
RGB	rgb(239, 255, 144)
HSL	hsl(69, 100%, 78%)
HSV	hsv(69, 44%, 100%)
CMYK	cmyk(6.3%, 0%, 43.5%, 0%)
CIE-LAB	lab(96.77, -21.21, 51.09)
CIE-LCH	lch(96.77, 55.32, 112.55°)
OKLab	oklab(96.48% -0.0594 0.1231)
OKLCH	oklch(96.48% 0.137 115.7)
XYZ	xyz(76.3914, 91.8852, 40.0915)
Luminance	0.9188 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFF90 #A090FF

analogous

#FFD890 #EFFF90 #B7FF90

triadic

#EFFF90 #90EFFF #FF90EF

tetradic

#EFFF90 #90FFD8 #A090FF #FF90B7

square

#EFFF90 #90FFD8 #A090FF #FF90B7

split-complementary

#EFFF90 #90B7FF #D890FF

monochromatic

#DDFF16 #E6FF53 #EFFF90 #F8FFCD #FBFFE0

Accessibility & contrast

On white

1.08

#EFFF90 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.38

#EFFF90 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFF90

19.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFF90	#FFFFFF	#000000	##000000
##EFFF90	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)

#FFF587

Deuteranopia (green-blind)

#FFF796

Tritanopia (blue-blind)

#FAF4E5

Achromatopsia (no color)

#F6F6F6

Design tokens & code

CSS

--color: #efff90;
/* rgb */ color: rgb(239, 255, 144);
/* oklch */ color: oklch(96.5% 0.137 115.7);

Tailwind

colors: {
  custom: {
    50: '#f6ffb2',
    500: '#efff90',
    950: '#000000',
  },
}

SCSS

$custom: #efff90;
$custom-light: #f6ffb2;
$custom-dark: #000000;

JSON

{
  "hex": "#efff90",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 144
  },
  "hsl": {
    "h": 68.649,
    "s": 100,
    "l": 78.235
  },
  "oklch": {
    "l": 0.96477,
    "c": 0.13666,
    "h": 115.7
  },
  "luminance": 0.91884
}

Semantic roles & 50–950 ramp

primary

#EFFF90

secondary

#6753E1

accent

#00E621

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171811

muted

#858681

Preview Lab

Preview with #EFFF90

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

Preview Lab → · Contrast checker → · Palette generator →