#B1D439#B1D439

#B1D439 is a light, vivid yellow-green. Relative luminance 0.567; OKLCH L 81.7% C 0.178 H 121.7°. Best body text is #000000 at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#B1D439
RGB	rgb(177, 212, 57)
HSL	hsl(74, 64%, 53%)
HSV	hsv(74, 73%, 83%)
CMYK	cmyk(16.5%, 0%, 73.1%, 16.9%)
CIE-LAB	lab(80.03, -31.82, 68.14)
CIE-LCH	lch(80.03, 75.21, 115.03°)
OKLab	oklab(81.7% -0.0935 0.1512)
OKLCH	oklch(81.7% 0.178 121.7)
XYZ	xyz(42.4141, 56.7294, 12.5855)
Luminance	0.5673 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D439 #5C39D4

analogous

#D4A939 #B1D439 #64D439

triadic

#B1D439 #39B1D4 #D439B1

tetradic

#B1D439 #39D4A9 #5C39D4 #D43964

square

#B1D439 #39D4A9 #5C39D4 #D43964

split-complementary

#B1D439 #3964D4 #A939D4

monochromatic

#63781A #8DAB25 #B1D439 #C5DF6B #D9EA9E

Accessibility & contrast

On white

1.70

#B1D439 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.35

#B1D439 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D439

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D439	#FFFFFF	#000000	##000000
##B1D439	1.00	1.70	12.35	12.35
#FFFFFF	1.70	1.00	21.00	21.00
#000000	12.35	21.00	1.00	1.00
##000000	12.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C719

Deuteranopia (green-blind)

#DCC647

Tritanopia (blue-blind)

#BBC9B6

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #b1d439;
/* rgb */ color: rgb(177, 212, 57);
/* oklch */ color: oklch(81.7% 0.178 121.7);

Tailwind

colors: {
  custom: {
    50: '#cce17a',
    500: '#b1d439',
    950: '#000000',
  },
}

SCSS

$custom: #b1d439;
$custom-light: #cce17a;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d439",
  "rgb": {
    "r": 177,
    "g": 212,
    "b": 57
  },
  "hsl": {
    "h": 73.548,
    "s": 64.315,
    "l": 52.745
  },
  "oklch": {
    "l": 0.81697,
    "c": 0.17782,
    "h": 121.7
  },
  "luminance": 0.56729
}

Semantic roles & 50–950 ramp

primary

#B1D439

secondary

#433180

accent

#40E766

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D439

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

Preview Lab → · Contrast checker → · Palette generator →