#B5D539#B5D539

#B5D539 is a very light, vivid yellow-green. Relative luminance 0.577; OKLCH L 82.2% C 0.177 H 120.7°. Best body text is #000000 at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#B5D539
RGB	rgb(181, 213, 57)
HSL	hsl(72, 65%, 53%)
HSV	hsv(72, 73%, 84%)
CMYK	cmyk(15%, 0%, 73.2%, 16.5%)
CIE-LAB	lab(80.58, -30.69, 68.76)
CIE-LCH	lch(80.58, 75.30, 114.05°)
OKLab	oklab(82.21% -0.0906 0.1524)
OKLCH	oklch(82.21% 0.177 120.7)
XYZ	xyz(43.5896, 57.7078, 12.7124)
Luminance	0.5771 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5D539 #5939D5

analogous

#D5A739 #B5D539 #67D539

triadic

#B5D539 #39B5D5 #D539B5

tetradic

#B5D539 #39D5A7 #5939D5 #D53967

square

#B5D539 #39D5A7 #5939D5 #D53967

split-complementary

#B5D539 #3967D5 #A739D5

monochromatic

#667A1A #90AC25 #B5D539 #C8E06B #DBEA9E

Accessibility & contrast

On white

1.67

#B5D539 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.54

#B5D539 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B5D539

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5D539	#FFFFFF	#000000	##000000
##B5D539	1.00	1.67	12.54	12.54
#FFFFFF	1.67	1.00	21.00	21.00
#000000	12.54	21.00	1.00	1.00
##000000	12.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E2C818

Deuteranopia (green-blind)

#DEC847

Tritanopia (blue-blind)

#BFCAB7

Achromatopsia (no color)

#C8C8C8

Design tokens & code

CSS

--color: #b5d539;
/* rgb */ color: rgb(181, 213, 57);
/* oklch */ color: oklch(82.2% 0.177 120.7);

Tailwind

colors: {
  custom: {
    50: '#cfe27a',
    500: '#b5d539',
    950: '#000000',
  },
}

SCSS

$custom: #b5d539;
$custom-light: #cfe27a;
$custom-dark: #000000;

JSON

{
  "hex": "#b5d539",
  "rgb": {
    "r": 181,
    "g": 213,
    "b": 57
  },
  "hsl": {
    "h": 72.308,
    "s": 65,
    "l": 52.941
  },
  "oklch": {
    "l": 0.82208,
    "c": 0.17734,
    "h": 120.7
  },
  "luminance": 0.57708
}

Semantic roles & 50–950 ramp

primary

#B5D539

secondary

#413182

accent

#40E862

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B5D539

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

Preview Lab → · Contrast checker → · Palette generator →