#EFFE64#EFFE64

#EFFE64 is a very light, vivid yellow. Relative luminance 0.902; OKLCH L 95.8% C 0.175 H 114.4°. Best body text is #000000 at 19.03:1 contrast (WCAG AA passes).

Color values

HEX	#EFFE64
RGB	rgb(239, 254, 100)
HSL	hsl(66, 99%, 69%)
HSV	hsv(66, 61%, 100%)
CMYK	cmyk(5.9%, 0%, 60.6%, 0.4%)
CIE-LAB	lab(96.06, -24.42, 69.78)
CIE-LCH	lch(96.06, 73.93, 109.29°)
OKLab	oklab(95.76% -0.0725 0.1595)
OKLCH	oklch(95.76% 0.175 114.4)
XYZ	xyz(73.3404, 90.1557, 25.5924)
Luminance	0.9015 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFE64 #7364FE

analogous

#FEC064 #EFFE64 #A2FE64

triadic

#EFFE64 #64EFFE #FE64EF

tetradic

#EFFE64 #64FEC0 #7364FE #FE64A2

square

#EFFE64 #64FEC0 #7364FE #FE64A2

split-complementary

#EFFE64 #64A2FE #C064FE

monochromatic

#D0E601 #E9FE27 #EFFE64 #F5FEA1 #FCFFDE

Accessibility & contrast

On white

1.10

#EFFE64 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.03

#EFFE64 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFE64

19.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFE64	#FFFFFF	#000000	##000000
##EFFE64	1.00	1.10	19.03	19.03
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.03	21.00	1.00	1.00
##000000	19.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF251

Deuteranopia (green-blind)

#FFF56E

Tritanopia (blue-blind)

#FDF0DE

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #effe64;
/* rgb */ color: rgb(239, 254, 100);
/* oklch */ color: oklch(95.8% 0.175 114.4);

Tailwind

colors: {
  custom: {
    50: '#f7fe96',
    500: '#effe64',
    950: '#000000',
  },
}

SCSS

$custom: #effe64;
$custom-light: #f7fe96;
$custom-dark: #000000;

JSON

{
  "hex": "#effe64",
  "rgb": {
    "r": 239,
    "g": 254,
    "b": 100
  },
  "hsl": {
    "h": 65.844,
    "s": 98.718,
    "l": 69.412
  },
  "oklch": {
    "l": 0.95762,
    "c": 0.17521,
    "h": 114.4
  },
  "luminance": 0.90154
}

Semantic roles & 50–950 ramp

primary

#EFFE64

secondary

#3E2DD9

accent

#00E616

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFE64

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

Preview Lab → · Contrast checker → · Palette generator →