#B1D437#B1D437

#B1D437 is a light, vivid yellow-green. Relative luminance 0.567; OKLCH L 81.7% C 0.179 H 121.7°. Best body text is #000000 at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#B1D437
RGB	rgb(177, 212, 55)
HSL	hsl(73, 65%, 52%)
HSV	hsv(73, 74%, 83%)
CMYK	cmyk(16.5%, 0%, 74.1%, 16.9%)
CIE-LAB	lab(80.02, -31.92, 68.79)
CIE-LCH	lch(80.02, 75.84, 114.89°)
OKLab	oklab(81.69% -0.094 0.1523)
OKLCH	oklch(81.69% 0.179 121.7)
XYZ	xyz(42.3652, 56.7099, 12.3279)
Luminance	0.5671 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D437 #5A37D4

analogous

#D4A937 #B1D437 #62D437

triadic

#B1D437 #37B1D4 #D437B1

tetradic

#B1D437 #37D4A9 #5A37D4 #D43762

square

#B1D437 #37D4A9 #5A37D4 #D43762

split-complementary

#B1D437 #3762D4 #A937D4

monochromatic

#62771A #8CA924 #B1D437 #C5DF69 #D8EA9C

Accessibility & contrast

On white

1.70

#B1D437 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.34

#B1D437 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D437

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D437	#FFFFFF	#000000	##000000
##B1D437	1.00	1.70	12.34	12.34
#FFFFFF	1.70	1.00	21.00	21.00
#000000	12.34	21.00	1.00	1.00
##000000	12.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C714

Deuteranopia (green-blind)

#DDC645

Tritanopia (blue-blind)

#BBC9B6

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #b1d437;
/* rgb */ color: rgb(177, 212, 55);
/* oklch */ color: oklch(81.7% 0.179 121.7);

Tailwind

colors: {
  custom: {
    50: '#cce179',
    500: '#b1d437',
    950: '#000000',
  },
}

SCSS

$custom: #b1d437;
$custom-light: #cce179;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d437",
  "rgb": {
    "r": 177,
    "g": 212,
    "b": 55
  },
  "hsl": {
    "h": 73.376,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.81685,
    "c": 0.17894,
    "h": 121.7
  },
  "luminance": 0.5671
}

Semantic roles & 50–950 ramp

primary

#B1D437

secondary

#42307F

accent

#40E866

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D437

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

Preview Lab → · Contrast checker → · Palette generator →