#EFF66E#EFF66E

#EFF66E is a very light, vivid yellow. Relative luminance 0.854; OKLCH L 94.2% C 0.158 H 111.8°. Best body text is #000000 at 18.08:1 contrast (WCAG AA passes).

Color values

HEX	#EFF66E
RGB	rgb(239, 246, 110)
HSL	hsl(63, 88%, 70%)
HSV	hsv(63, 55%, 96%)
CMYK	cmyk(2.8%, 0%, 55.3%, 3.5%)
CIE-LAB	lab(94.05, -19.90, 63.37)
CIE-LCH	lch(94.05, 66.42, 107.43°)
OKLab	oklab(94.18% -0.0588 0.147)
OKLCH	oklch(94.18% 0.158 111.8)
XYZ	xyz(71.3685, 85.3895, 27.4711)
Luminance	0.8539 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF66E #756EF6

analogous

#F6B96E #EFF66E #ABF66E

triadic

#EFF66E #6EEFF6 #F66EEF

tetradic

#EFF66E #6EF6B9 #756EF6 #F66EAB

square

#EFF66E #6EF6B9 #756EF6 #F66EAB

split-complementary

#EFF66E #6EABF6 #B96EF6

monochromatic

#D1DC0E #E9F234 #EFF66E #F5FAA8 #FCFDE1

Accessibility & contrast

On white

1.16

#EFF66E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.08

#EFF66E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF66E

18.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF66E	#FFFFFF	#000000	##000000
##EFF66E	1.00	1.16	18.08	18.08
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.08	21.00	1.00	1.00
##000000	18.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC60

Deuteranopia (green-blind)

#FFF076

Tritanopia (blue-blind)

#FDE9D8

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff66e;
/* rgb */ color: rgb(239, 246, 110);
/* oklch */ color: oklch(94.2% 0.158 111.8);

Tailwind

colors: {
  custom: {
    50: '#f7f99c',
    500: '#eff66e',
    950: '#000000',
  },
}

SCSS

$custom: #eff66e;
$custom-light: #f7f99c;
$custom-dark: #000000;

JSON

{
  "hex": "#eff66e",
  "rgb": {
    "r": 239,
    "g": 246,
    "b": 110
  },
  "hsl": {
    "h": 63.088,
    "s": 88.312,
    "l": 69.804
  },
  "oklch": {
    "l": 0.94182,
    "c": 0.15836,
    "h": 111.8
  },
  "luminance": 0.85388
}

Semantic roles & 50–950 ramp

primary

#EFF66E

secondary

#4038D0

accent

#01E50C

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #EFF66E

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

Preview Lab → · Contrast checker → · Palette generator →