#EFFC81#EFFC81

#EFFC81 is a very light, vivid yellow. Relative luminance 0.896; OKLCH L 95.7% C 0.148 H 114.2°. Best body text is #000000 at 18.91:1 contrast (WCAG AA passes).

Color values

HEX	#EFFC81
RGB	rgb(239, 252, 129)
HSL	hsl(66, 95%, 75%)
HSV	hsv(66, 49%, 99%)
CMYK	cmyk(5.2%, 0%, 48.8%, 1.2%)
CIE-LAB	lab(95.81, -21.21, 56.92)
CIE-LCH	lch(95.81, 60.74, 110.44°)
OKLab	oklab(95.65% -0.0606 0.1349)
OKLCH	oklch(95.65% 0.148 114.2)
XYZ	xyz(74.3706, 89.5576, 34.1332)
Luminance	0.8956 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFC81 #8E81FC

analogous

#FCCB81 #EFFC81 #B2FC81

triadic

#EFFC81 #81EFFC #FC81EF

tetradic

#EFFC81 #81FCCB #8E81FC #FC81B2

square

#EFFC81 #81FCCB #8E81FC #FC81B2

split-complementary

#EFFC81 #81B2FC #CB81FC

monochromatic

#E0F909 #E7FB45 #EFFC81 #F7FDBD #FBFEE1

Accessibility & contrast

On white

1.11

#EFFC81 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.91

#EFFC81 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFC81

18.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFC81	#FFFFFF	#000000	##000000
##EFFC81	1.00	1.11	18.91	18.91
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.91	21.00	1.00	1.00
##000000	18.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF276

Deuteranopia (green-blind)

#FFF488

Tritanopia (blue-blind)

#FCF0E0

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #effc81;
/* rgb */ color: rgb(239, 252, 129);
/* oklch */ color: oklch(95.7% 0.148 114.2);

Tailwind

colors: {
  custom: {
    50: '#f6fda8',
    500: '#effc81',
    950: '#000000',
  },
}

SCSS

$custom: #effc81;
$custom-light: #f6fda8;
$custom-dark: #000000;

JSON

{
  "hex": "#effc81",
  "rgb": {
    "r": 239,
    "g": 252,
    "b": 129
  },
  "hsl": {
    "h": 66.341,
    "s": 95.349,
    "l": 74.706
  },
  "oklch": {
    "l": 0.95653,
    "c": 0.14792,
    "h": 114.2
  },
  "luminance": 0.89557
}

Semantic roles & 50–950 ramp

primary

#EFFC81

secondary

#5647DA

accent

#00E618

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFFC81

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

Preview Lab → · Contrast checker → · Palette generator →