#EFF181#EFF181

#EFF181 is a very light, vivid yellow. Relative luminance 0.828; OKLCH L 93.4% C 0.135 H 109.7°. Best body text is #000000 at 17.57:1 contrast (WCAG AA passes).

Color values

HEX	#EFF181
RGB	rgb(239, 241, 129)
HSL	hsl(61, 80%, 73%)
HSV	hsv(61, 46%, 95%)
CMYK	cmyk(0.8%, 0%, 46.5%, 5.5%)
CIE-LAB	lab(92.95, -15.90, 53.48)
CIE-LCH	lch(92.95, 55.79, 106.55°)
OKLab	oklab(93.37% -0.0455 0.1274)
OKLCH	oklch(93.37% 0.135 109.7)
XYZ	xyz(71.0157, 82.8478, 33.0149)
Luminance	0.8285 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF181 #8381F1

analogous

#F1BB81 #EFF181 #B7F181

triadic

#EFF181 #81EFF1 #F181EF

tetradic

#EFF181 #81F1BB #8381F1 #F181B7

square

#EFF181 #81F1BB #8381F1 #F181B7

split-complementary

#EFF181 #81B7F1 #BB81F1

monochromatic

#DBDF19 #E8EB4A #EFF181 #F6F7B8 #FCFCE3

Accessibility & contrast

On white

1.20

#EFF181 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.57

#EFF181 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF181

17.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF181	#FFFFFF	#000000	##000000
##EFF181	1.00	1.20	17.57	17.57
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.57	21.00	1.00	1.00
##000000	17.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE977

Deuteranopia (green-blind)

#FFED86

Tritanopia (blue-blind)

#FCE5D7

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #eff181;
/* rgb */ color: rgb(239, 241, 129);
/* oklch */ color: oklch(93.4% 0.135 109.7);

Tailwind

colors: {
  custom: {
    50: '#f6f5a8',
    500: '#eff181',
    950: '#000000',
  },
}

SCSS

$custom: #eff181;
$custom-light: #f6f5a8;
$custom-dark: #000000;

JSON

{
  "hex": "#eff181",
  "rgb": {
    "r": 239,
    "g": 241,
    "b": 129
  },
  "hsl": {
    "h": 61.071,
    "s": 80,
    "l": 72.549
  },
  "oklch": {
    "l": 0.93367,
    "c": 0.13526,
    "h": 109.7
  },
  "luminance": 0.82846
}

Semantic roles & 50–950 ramp

primary

#EFF181

secondary

#4D4ACC

accent

#09DC0D

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF181

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

Preview Lab → · Contrast checker → · Palette generator →