#EFF566#EFF566

#EFF566 is a very light, vivid yellow. Relative luminance 0.846; OKLCH L 93.9% C 0.164 H 111.4°. Best body text is #000000 at 17.92:1 contrast (WCAG AA passes).

Color values

HEX	#EFF566
RGB	rgb(239, 245, 102)
HSL	hsl(63, 88%, 68%)
HSV	hsv(63, 58%, 96%)
CMYK	cmyk(2.4%, 0%, 58.4%, 3.9%)
CIE-LAB	lab(93.72, -20.00, 66.41)
CIE-LCH	lch(93.72, 69.35, 106.76°)
OKLab	oklab(93.89% -0.0598 0.1526)
OKLCH	oklch(93.89% 0.164 111.4)
XYZ	xyz(70.6491, 84.6164, 25.1788)
Luminance	0.8461 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF566 #6C66F5

analogous

#F5B366 #EFF566 #A8F566

triadic

#EFF566 #66EFF5 #F566EF

tetradic

#EFF566 #66F5B3 #6C66F5 #F566A8

square

#EFF566 #66F5B3 #6C66F5 #F566A8

split-complementary

#EFF566 #66A8F5 #B366F5

monochromatic

#CBD30E #E9F12D #EFF566 #F5F99F #FBFDD9

Accessibility & contrast

On white

1.17

#EFF566 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.92

#EFF566 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF566

17.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF566	#FFFFFF	#000000	##000000
##EFF566	1.00	1.17	17.92	17.92
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.92	21.00	1.00	1.00
##000000	17.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB56

Deuteranopia (green-blind)

#FFEF6F

Tritanopia (blue-blind)

#FEE7D6

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff566;
/* rgb */ color: rgb(239, 245, 102);
/* oklch */ color: oklch(93.9% 0.164 111.4);

Tailwind

colors: {
  custom: {
    50: '#f7f897',
    500: '#eff566',
    950: '#000000',
  },
}

SCSS

$custom: #eff566;
$custom-light: #f7f897;
$custom-dark: #000000;

JSON

{
  "hex": "#eff566",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 102
  },
  "hsl": {
    "h": 62.517,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.93893,
    "c": 0.16392,
    "h": 111.4
  },
  "luminance": 0.84615
}

Semantic roles & 50–950 ramp

primary

#EFF566

secondary

#3831CE

accent

#01E40B

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFF566

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

Preview Lab → · Contrast checker → · Palette generator →