#EFF563#EFF563

#EFF563 is a very light, vivid yellow. Relative luminance 0.846; OKLCH L 93.9% C 0.166 H 111.4°. Best body text is #000000 at 17.91:1 contrast (WCAG AA passes).

Color values

HEX	#EFF563
RGB	rgb(239, 245, 99)
HSL	hsl(62, 88%, 67%)
HSV	hsv(62, 60%, 96%)
CMYK	cmyk(2.4%, 0%, 59.6%, 3.9%)
CIE-LAB	lab(93.69, -20.20, 67.63)
CIE-LCH	lch(93.69, 70.58, 106.63°)
OKLab	oklab(93.87% -0.0607 0.1548)
OKLCH	oklch(93.87% 0.166 111.4)
XYZ	xyz(70.5030, 84.5580, 24.4093)
Luminance	0.8456 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF563 #6963F5

analogous

#F5B263 #EFF563 #A6F563

triadic

#EFF563 #63EFF5 #F563EF

tetradic

#EFF563 #63F5B2 #6963F5 #F563A6

square

#EFF563 #63F5B2 #6963F5 #F563A6

split-complementary

#EFF563 #63A6F5 #B263F5

monochromatic

#C8D00D #E9F129 #EFF563 #F5F99D #FBFCD6

Accessibility & contrast

On white

1.17

#EFF563 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.91

#EFF563 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF563

17.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF563	#FFFFFF	#000000	##000000
##EFF563	1.00	1.17	17.91	17.91
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.91	21.00	1.00	1.00
##000000	17.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB52

Deuteranopia (green-blind)

#FFEF6C

Tritanopia (blue-blind)

#FEE7D6

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff563;
/* rgb */ color: rgb(239, 245, 99);
/* oklch */ color: oklch(93.9% 0.166 111.4);

Tailwind

colors: {
  custom: {
    50: '#f7f895',
    500: '#eff563',
    950: '#000000',
  },
}

SCSS

$custom: #eff563;
$custom-light: #f7f895;
$custom-dark: #000000;

JSON

{
  "hex": "#eff563",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 99
  },
  "hsl": {
    "h": 62.466,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.93865,
    "c": 0.1663,
    "h": 111.4
  },
  "luminance": 0.84556
}

Semantic roles & 50–950 ramp

primary

#EFF563

secondary

#3730CC

accent

#01E50A

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFF563

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

Preview Lab → · Contrast checker → · Palette generator →