#EFFB83#EFFB83

#EFFB83 is a very light, vivid yellow. Relative luminance 0.890; OKLCH L 95.5% C 0.145 H 113.9°. Best body text is #000000 at 18.80:1 contrast (WCAG AA passes).

Color values

HEX	#EFFB83
RGB	rgb(239, 251, 131)
HSL	hsl(66, 94%, 75%)
HSV	hsv(66, 48%, 98%)
CMYK	cmyk(4.8%, 0%, 47.8%, 1.6%)
CIE-LAB	lab(95.57, -20.55, 55.71)
CIE-LCH	lch(95.57, 59.38, 110.25°)
OKLab	oklab(95.47% -0.0586 0.1324)
OKLCH	oklch(95.47% 0.145 113.9)
XYZ	xyz(74.1917, 88.9849, 34.7358)
Luminance	0.8898 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFB83 #8F83FB

analogous

#FBCB83 #EFFB83 #B3FB83

triadic

#EFFB83 #83EFFB #FB83EF

tetradic

#EFFB83 #83FBCB #8F83FB #FB83B3

square

#EFFB83 #83FBCB #8F83FB #FB83B3

split-complementary

#EFFB83 #83B3FB #CB83FB

monochromatic

#E0F70C #E7F948 #EFFB83 #F7FDBE #FBFEE1

Accessibility & contrast

On white

1.12

#EFFB83 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.80

#EFFB83 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFB83

18.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFB83	#FFFFFF	#000000	##000000
##EFFB83	1.00	1.12	18.80	18.80
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.80	21.00	1.00	1.00
##000000	18.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF178

Deuteranopia (green-blind)

#FFF489

Tritanopia (blue-blind)

#FCEFDF

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #effb83;
/* rgb */ color: rgb(239, 251, 131);
/* oklch */ color: oklch(95.5% 0.145 113.9);

Tailwind

colors: {
  custom: {
    50: '#f6fca9',
    500: '#effb83',
    950: '#000000',
  },
}

SCSS

$custom: #effb83;
$custom-light: #f6fca9;
$custom-dark: #000000;

JSON

{
  "hex": "#effb83",
  "rgb": {
    "r": 239,
    "g": 251,
    "b": 131
  },
  "hsl": {
    "h": 66,
    "s": 93.75,
    "l": 74.902
  },
  "oklch": {
    "l": 0.95469,
    "c": 0.14482,
    "h": 113.9
  },
  "luminance": 0.88984
}

Semantic roles & 50–950 ramp

primary

#EFFB83

secondary

#5749D9

accent

#00E617

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFFB83

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

Preview Lab → · Contrast checker → · Palette generator →