#B1F259#B1F259

#B1F259 is a very light, vivid yellow-green. Relative luminance 0.736; OKLCH L 88.8% C 0.193 H 129.3°. Best body text is #000000 at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#B1F259
RGB	rgb(177, 242, 89)
HSL	hsl(85, 85%, 65%)
HSV	hsv(85, 63%, 95%)
CMYK	cmyk(26.9%, 0%, 63.2%, 5.1%)
CIE-LAB	lab(88.72, -43.26, 65.13)
CIE-LCH	lch(88.72, 78.19, 123.59°)
OKLab	oklab(88.8% -0.1223 0.1494)
OKLCH	oklch(88.8% 0.193 129.3)
XYZ	xyz(51.6865, 73.5714, 20.9268)
Luminance	0.7357 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1F259 #9A59F2

analogous

#F2E659 #B1F259 #65F259

triadic

#B1F259 #59B1F2 #F259B1

tetradic

#B1F259 #59F2E6 #9A59F2 #F25965

square

#B1F259 #59F2E6 #9A59F2 #F25965

split-complementary

#B1F259 #5965F2 #E659F2

monochromatic

#76C10F #96EE20 #B1F259 #CCF692 #E6FBCB

Accessibility & contrast

On white

1.34

#B1F259 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.71

#B1F259 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1F259

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1F259	#FFFFFF	#000000	##000000
##B1F259	1.00	1.34	15.71	15.71
#FFFFFF	1.34	1.00	21.00	21.00
#000000	15.71	21.00	1.00	1.00
##000000	15.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FDE246

Deuteranopia (green-blind)

#F4DD65

Tritanopia (blue-blind)

#B6E8D2

Achromatopsia (no color)

#DFDFDF

Design tokens & code

CSS

--color: #b1f259;
/* rgb */ color: rgb(177, 242, 89);
/* oklch */ color: oklch(88.8% 0.193 129.3);

Tailwind

colors: {
  custom: {
    50: '#ccf68e',
    500: '#b1f259',
    950: '#000000',
  },
}

SCSS

$custom: #b1f259;
$custom-light: #ccf68e;
$custom-dark: #000000;

JSON

{
  "hex": "#b1f259",
  "rgb": {
    "r": 177,
    "g": 242,
    "b": 89
  },
  "hsl": {
    "h": 85.49,
    "s": 85.475,
    "l": 64.902
  },
  "oklch": {
    "l": 0.88803,
    "c": 0.1931,
    "h": 129.3
  },
  "luminance": 0.73573
}

Semantic roles & 50–950 ramp

primary

#B1F259

secondary

#6D30BF

accent

#04E262

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14170D

muted

#83857F

Preview Lab

Preview with #B1F259

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

Preview Lab → · Contrast checker → · Palette generator →