#B1FC63#B1FC63

#B1FC63 is a very light, vivid yellow-green. Relative luminance 0.799; OKLCH L 91.2% C 0.198 H 131.4°. Best body text is #000000 at 16.97:1 contrast (WCAG AA passes).

Color values

HEX	#B1FC63
RGB	rgb(177, 252, 99)
HSL	hsl(89, 96%, 69%)
HSV	hsv(89, 61%, 99%)
CMYK	cmyk(29.8%, 0%, 60.7%, 1.2%)
CIE-LAB	lab(91.63, -46.76, 64.23)
CIE-LCH	lch(91.63, 79.45, 126.05°)
OKLab	oklab(91.19% -0.1311 0.1487)
OKLCH	oklch(91.19% 0.198 131.4)
XYZ	xyz(55.1934, 79.8670, 24.3098)
Luminance	0.7987 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

#A9F971

ΔE00 2.43

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1FC63 #AE63FC

analogous

#FCFB63 #B1FC63 #65FC63

triadic

#B1FC63 #63B1FC #FC63B1

tetradic

#B1FC63 #63FCFB #AE63FC #FC6365

square

#B1FC63 #63FCFB #AE63FC #FC6365

split-complementary

#B1FC63 #6365FC #FB63FC

monochromatic

#74E004 #93FB27 #B1FC63 #CFFD9F #EDFEDB

Accessibility & contrast

On white

1.24

#B1FC63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.97

#B1FC63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1FC63

16.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1FC63	#FFFFFF	#000000	##000000
##B1FC63	1.00	1.24	16.97	16.97
#FFFFFF	1.24	1.00	21.00	21.00
#000000	16.97	21.00	1.00	1.00
##000000	16.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB51

Deuteranopia (green-blind)

#FCE56F

Tritanopia (blue-blind)

#B4F2DC

Achromatopsia (no color)

#E7E7E7

Design tokens & code

CSS

--color: #b1fc63;
/* rgb */ color: rgb(177, 252, 99);
/* oklch */ color: oklch(91.2% 0.198 131.4);

Tailwind

colors: {
  custom: {
    50: '#ccfd95',
    500: '#b1fc63',
    950: '#000000',
  },
}

SCSS

$custom: #b1fc63;
$custom-light: #ccfd95;
$custom-dark: #000000;

JSON

{
  "hex": "#b1fc63",
  "rgb": {
    "r": 177,
    "g": 252,
    "b": 99
  },
  "hsl": {
    "h": 89.412,
    "s": 96.226,
    "l": 68.824
  },
  "oklch": {
    "l": 0.91189,
    "c": 0.19822,
    "h": 131.4
  },
  "luminance": 0.79869
}

Semantic roles & 50–950 ramp

primary

#B1FC63

secondary

#802DD6

accent

#00E671

background

#FEFFFC

surface

#FBFFF5

border

#D4D7CF

text

#14180E

muted

#83867F

Preview Lab

Preview with #B1FC63

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

Preview Lab → · Contrast checker → · Palette generator →