#B1F563#B1F563

#B1F563 is a very light, vivid yellow-green. Relative luminance 0.756; OKLCH L 89.6% C 0.189 H 130.5°. Best body text is #000000 at 16.11:1 contrast (WCAG AA passes).

Color values

HEX	#B1F563
RGB	rgb(177, 245, 99)
HSL	hsl(88, 88%, 67%)
HSV	hsv(88, 60%, 96%)
CMYK	cmyk(27.8%, 0%, 59.6%, 3.9%)
CIE-LAB	lab(89.65, -43.76, 62.03)
CIE-LCH	lch(89.65, 75.91, 125.20°)
OKLab	oklab(89.59% -0.1229 0.144)
OKLCH	oklch(89.59% 0.189 130.5)
XYZ	xyz(53.0355, 75.5513, 23.5906)
Luminance	0.7555 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1F563 #A763F5

analogous

#F5F063 #B1F563 #68F563

triadic

#B1F563 #63B1F5 #F563B1

tetradic

#B1F563 #63F5F0 #A763F5 #F56368

square

#B1F563 #63F5F0 #A763F5 #F56368

split-complementary

#B1F563 #6368F5 #F063F5

monochromatic

#75D00D #94F129 #B1F563 #CEF99D #EBFCD6

Accessibility & contrast

On white

1.30

#B1F563 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.11

#B1F563 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1F563

16.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1F563	#FFFFFF	#000000	##000000
##B1F563	1.00	1.30	16.11	16.11
#FFFFFF	1.30	1.00	21.00	21.00
#000000	16.11	21.00	1.00	1.00
##000000	16.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE553

Deuteranopia (green-blind)

#F6E06E

Tritanopia (blue-blind)

#B5EBD6

Achromatopsia (no color)

#E1E1E1

Design tokens & code

CSS

--color: #b1f563;
/* rgb */ color: rgb(177, 245, 99);
/* oklch */ color: oklch(89.6% 0.189 130.5);

Tailwind

colors: {
  custom: {
    50: '#ccf994',
    500: '#b1f563',
    950: '#000000',
  },
}

SCSS

$custom: #b1f563;
$custom-light: #ccf994;
$custom-dark: #000000;

JSON

{
  "hex": "#b1f563",
  "rgb": {
    "r": 177,
    "g": 245,
    "b": 99
  },
  "hsl": {
    "h": 87.945,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.89586,
    "c": 0.18927,
    "h": 130.5
  },
  "luminance": 0.75553
}

Semantic roles & 50–950 ramp

primary

#B1F563

secondary

#7930CC

accent

#01E56B

background

#FEFFFC

surface

#FBFFF5

border

#D4D7CF

text

#14170E

muted

#83857F

Preview Lab

Preview with #B1F563

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

Preview Lab → · Contrast checker → · Palette generator →