#B1F577#B1F577

#B1F577 is a very light, vivid yellow-green. Relative luminance 0.760; OKLCH L 89.8% C 0.172 H 132.4°. Best body text is #000000 at 16.20:1 contrast (WCAG AA passes).

Color values

HEX	#B1F577
RGB	rgb(177, 245, 119)
HSL	hsl(92, 86%, 71%)
HSV	hsv(92, 51%, 96%)
CMYK	cmyk(27.8%, 0%, 51.4%, 3.9%)
CIE-LAB	lab(89.85, -41.85, 53.43)
CIE-LCH	lch(89.85, 67.87, 128.07°)
OKLab	oklab(89.81% -0.1161 0.1272)
OKLCH	oklch(89.81% 0.172 132.4)
XYZ	xyz(54.1128, 75.9822, 29.2642)
Luminance	0.7598 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1F577 #BB77F5

analogous

#F0F577 #B1F577 #77F57C

triadic

#B1F577 #77B1F5 #F577B1

tetradic

#B1F577 #77F0F5 #BB77F5 #F57C77

square

#B1F577 #77F0F5 #BB77F5 #F57C77

split-complementary

#B1F577 #7C77F5 #F577F0

monochromatic

#71E111 #90F13E #B1F577 #D2F9B0 #EFFDE2

Accessibility & contrast

On white

1.30

#B1F577 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.20

#B1F577 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1F577

16.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1F577	#FFFFFF	#000000	##000000
##B1F577	1.00	1.30	16.20	16.20
#FFFFFF	1.30	1.00	21.00	21.00
#000000	16.20	21.00	1.00	1.00
##000000	16.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE56B

Deuteranopia (green-blind)

#F4E07F

Tritanopia (blue-blind)

#B3ECD8

Achromatopsia (no color)

#E2E2E2

Design tokens & code

CSS

--color: #b1f577;
/* rgb */ color: rgb(177, 245, 119);
/* oklch */ color: oklch(89.8% 0.172 132.4);

Tailwind

colors: {
  custom: {
    50: '#cbf9a1',
    500: '#b1f577',
    950: '#000000',
  },
}

SCSS

$custom: #b1f577;
$custom-light: #cbf9a1;
$custom-dark: #000000;

JSON

{
  "hex": "#b1f577",
  "rgb": {
    "r": 177,
    "g": 245,
    "b": 119
  },
  "hsl": {
    "h": 92.381,
    "s": 86.301,
    "l": 71.373
  },
  "oklch": {
    "l": 0.89813,
    "c": 0.17221,
    "h": 132.4
  },
  "luminance": 0.75984
}

Semantic roles & 50–950 ramp

primary

#B1F577

secondary

#8E40D0

accent

#03E37C

background

#FEFFFC

surface

#FBFFF5

border

#D4D7CF

text

#14170F

muted

#838580

Preview Lab

Preview with #B1F577

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

Preview Lab → · Contrast checker → · Palette generator →