#B1F571#B1F571

#B1F571 is a very light, vivid yellow-green. Relative luminance 0.758; OKLCH L 89.7% C 0.178 H 131.7°. Best body text is #000000 at 16.17:1 contrast (WCAG AA passes).

Color values

HEX	#B1F571
RGB	rgb(177, 245, 113)
HSL	hsl(91, 87%, 70%)
HSV	hsv(91, 54%, 96%)
CMYK	cmyk(27.8%, 0%, 53.9%, 3.9%)
CIE-LAB	lab(89.79, -42.46, 56.08)
CIE-LCH	lch(89.79, 70.34, 127.13°)
OKLab	oklab(89.74% -0.1182 0.1325)
OKLCH	oklch(89.74% 0.178 131.7)
XYZ	xyz(53.7638, 75.8426, 27.4260)
Luminance	0.7584 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1F571 #B571F5

analogous

#F3F571 #B1F571 #71F573

triadic

#B1F571 #71B1F5 #F571B1

tetradic

#B1F571 #71F3F5 #B571F5 #F57371

square

#B1F571 #71F3F5 #B571F5 #F57371

split-complementary

#B1F571 #7371F5 #F571F3

monochromatic

#73DC10 #92F138 #B1F571 #D0F9AA #EFFDE2

Accessibility & contrast

On white

1.30

#B1F571 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.17

#B1F571 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1F571

16.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1F571	#FFFFFF	#000000	##000000
##B1F571	1.00	1.30	16.17	16.17
#FFFFFF	1.30	1.00	21.00	21.00
#000000	16.17	21.00	1.00	1.00
##000000	16.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE564

Deuteranopia (green-blind)

#F5E07A

Tritanopia (blue-blind)

#B3ECD8

Achromatopsia (no color)

#E2E2E2

Design tokens & code

CSS

--color: #b1f571;
/* rgb */ color: rgb(177, 245, 113);
/* oklch */ color: oklch(89.7% 0.178 131.7);

Tailwind

colors: {
  custom: {
    50: '#cbf99d',
    500: '#b1f571',
    950: '#000000',
  },
}

SCSS

$custom: #b1f571;
$custom-light: #cbf99d;
$custom-dark: #000000;

JSON

{
  "hex": "#b1f571",
  "rgb": {
    "r": 177,
    "g": 245,
    "b": 113
  },
  "hsl": {
    "h": 90.909,
    "s": 86.842,
    "l": 70.196
  },
  "oklch": {
    "l": 0.8974,
    "c": 0.17757,
    "h": 131.7
  },
  "luminance": 0.75844
}

Semantic roles & 50–950 ramp

primary

#B1F571

secondary

#873BCF

accent

#02E376

background

#FEFFFC

surface

#FBFFF5

border

#D4D7CF

text

#14170F

muted

#838580

Preview Lab

Preview with #B1F571

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

Preview Lab → · Contrast checker → · Palette generator →