#EFFC8B#EFFC8B

#EFFC8B is a very light, vivid yellow. Relative luminance 0.898; OKLCH L 95.8% C 0.138 H 114.4°. Best body text is #000000 at 18.97:1 contrast (WCAG AA passes).

Color values

HEX	#EFFC8B
RGB	rgb(239, 252, 139)
HSL	hsl(67, 95%, 77%)
HSV	hsv(67, 45%, 99%)
CMYK	cmyk(5.2%, 0%, 44.8%, 1.2%)
CIE-LAB	lab(95.93, -20.27, 52.41)
CIE-LCH	lch(95.93, 56.19, 111.15°)
OKLab	oklab(95.78% -0.0571 0.1257)
OKLCH	oklch(95.78% 0.138 114.4)
XYZ	xyz(75.0681, 89.8366, 37.8067)
Luminance	0.8984 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFC8B #988BFC

analogous

#FCD18B #EFFC8B #B7FC8B

triadic

#EFFC8B #8BEFFC #FC8BEF

tetradic

#EFFC8B #8BFCD1 #988BFC #FC8BB7

square

#EFFC8B #8BFCD1 #988BFC #FC8BB7

split-complementary

#EFFC8B #8BB7FC #D18BFC

monochromatic

#DFF914 #E7FA4F #EFFC8B #F7FEC7 #FBFEE1

Accessibility & contrast

On white

1.11

#EFFC8B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.97

#EFFC8B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFC8B

18.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFC8B	#FFFFFF	#000000	##000000
##EFFC8B	1.00	1.11	18.97	18.97
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.97	21.00	1.00	1.00
##000000	18.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF282

Deuteranopia (green-blind)

#FFF491

Tritanopia (blue-blind)

#FBF1E1

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #effc8b;
/* rgb */ color: rgb(239, 252, 139);
/* oklch */ color: oklch(95.8% 0.138 114.4);

Tailwind

colors: {
  custom: {
    50: '#f6fdaf',
    500: '#effc8b',
    950: '#000000',
  },
}

SCSS

$custom: #effc8b;
$custom-light: #f6fdaf;
$custom-dark: #000000;

JSON

{
  "hex": "#effc8b",
  "rgb": {
    "r": 239,
    "g": 252,
    "b": 139
  },
  "hsl": {
    "h": 66.903,
    "s": 94.958,
    "l": 76.667
  },
  "oklch": {
    "l": 0.95783,
    "c": 0.13808,
    "h": 114.4
  },
  "luminance": 0.89836
}

Semantic roles & 50–950 ramp

primary

#EFFC8B

secondary

#6050DC

accent

#00E61A

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFFC8B

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

Preview Lab → · Contrast checker → · Palette generator →