#B1D545#B1D545

#B1D545 is a very light, vivid yellow-green. Relative luminance 0.574; OKLCH L 82.0% C 0.172 H 122.4°. Best body text is #000000 at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#B1D545
RGB	rgb(177, 213, 69)
HSL	hsl(75, 63%, 55%)
HSV	hsv(75, 68%, 84%)
CMYK	cmyk(16.9%, 0%, 67.6%, 16.5%)
CIE-LAB	lab(80.38, -31.61, 64.20)
CIE-LCH	lch(80.38, 71.56, 116.22°)
OKLab	oklab(82.01% -0.0919 0.1448)
OKLCH	oklch(82.01% 0.172 122.4)
XYZ	xyz(43.0004, 57.3652, 14.4363)
Luminance	0.5736 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D545 #6945D5

analogous

#D5B145 #B1D545 #69D545

triadic

#B1D545 #45B1D5 #D545B1

tetradic

#B1D545 #45D5B1 #6945D5 #D54569

square

#B1D545 #45D5B1 #6945D5 #D54569

split-complementary

#B1D545 #4569D5 #B145D5

monochromatic

#69821D #91B429 #B1D545 #C6E077 #DBECA9

Accessibility & contrast

On white

1.68

#B1D545 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.47

#B1D545 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D545

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D545	#FFFFFF	#000000	##000000
##B1D545	1.00	1.68	12.47	12.47
#FFFFFF	1.68	1.00	21.00	21.00
#000000	12.47	21.00	1.00	1.00
##000000	12.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C82F

Deuteranopia (green-blind)

#DDC750

Tritanopia (blue-blind)

#BACAB8

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #b1d545;
/* rgb */ color: rgb(177, 213, 69);
/* oklch */ color: oklch(82.0% 0.172 122.4);

Tailwind

colors: {
  custom: {
    50: '#cce280',
    500: '#b1d545',
    950: '#000000',
  },
}

SCSS

$custom: #b1d545;
$custom-light: #cce280;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d545",
  "rgb": {
    "r": 177,
    "g": 213,
    "b": 69
  },
  "hsl": {
    "h": 75,
    "s": 63.158,
    "l": 55.294
  },
  "oklch": {
    "l": 0.8201,
    "c": 0.17151,
    "h": 122.4
  },
  "luminance": 0.57365
}

Semantic roles & 50–950 ramp

primary

#B1D545

secondary

#4A3589

accent

#42E66B

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150B

muted

#83847E

Preview Lab

Preview with #B1D545

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

Preview Lab → · Contrast checker → · Palette generator →