#B9F581#B9F581

#B9F581 is a very light, vivid yellow-green. Relative luminance 0.772; OKLCH L 90.4% C 0.159 H 131.4°. Best body text is #000000 at 16.44:1 contrast (WCAG AA passes).

Color values

HEX	#B9F581
RGB	rgb(185, 245, 129)
HSL	hsl(91, 85%, 73%)
HSV	hsv(91, 47%, 96%)
CMYK	cmyk(24.5%, 0%, 47.3%, 3.9%)
CIE-LAB	lab(90.41, -37.97, 49.56)
CIE-LCH	lch(90.41, 62.44, 127.46°)
OKLab	oklab(90.42% -0.1051 0.1192)
OKLCH	oklch(90.42% 0.159 131.4)
XYZ	xyz(56.6216, 77.2027, 32.6831)
Luminance	0.7720 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Pistachio (survey)

#C0FA8B

ΔE00 1.38

Light Yellowish Green

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B9F581 #BD81F5

analogous

#F3F581 #B9F581 #81F583

triadic

#B9F581 #81B9F5 #F581B9

tetradic

#B9F581 #81F3F5 #BD81F5 #F58381

square

#B9F581 #81F3F5 #BD81F5 #F58381

split-complementary

#B9F581 #8381F5 #F581F3

monochromatic

#7AE913 #9AF048 #B9F581 #D8F9BA #EFFDE3

Accessibility & contrast

On white

1.28

#B9F581 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.44

#B9F581 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B9F581

16.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B9F581	#FFFFFF	#000000	##000000
##B9F581	1.00	1.28	16.44	16.44
#FFFFFF	1.28	1.00	21.00	21.00
#000000	16.44	21.00	1.00	1.00
##000000	16.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE777

Deuteranopia (green-blind)

#F5E288

Tritanopia (blue-blind)

#BBEDDA

Achromatopsia (no color)

#E4E4E4

Design tokens & code

CSS

--color: #b9f581;
/* rgb */ color: rgb(185, 245, 129);
/* oklch */ color: oklch(90.4% 0.159 131.4);

Tailwind

colors: {
  custom: {
    50: '#d0f8a8',
    500: '#b9f581',
    950: '#000000',
  },
}

SCSS

$custom: #b9f581;
$custom-light: #d0f8a8;
$custom-dark: #000000;

JSON

{
  "hex": "#b9f581",
  "rgb": {
    "r": 185,
    "g": 245,
    "b": 129
  },
  "hsl": {
    "h": 91.034,
    "s": 85.294,
    "l": 73.333
  },
  "oklch": {
    "l": 0.90424,
    "c": 0.15893,
    "h": 131.4
  },
  "luminance": 0.77204
}

Semantic roles & 50–950 ramp

primary

#B9F581

secondary

#8F49D1

accent

#04E277

background

#FEFFFC

surface

#FBFFF6

border

#D4D7D0

text

#141710

muted

#838580

Preview Lab

Preview with #B9F581

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

Preview Lab → · Contrast checker → · Palette generator →