#B1E581#B1E581

#B1E581 is a very light, vivid yellow-green. Relative luminance 0.670; OKLCH L 86.3% C 0.140 H 131.3°. Best body text is #000000 at 14.39:1 contrast (WCAG AA passes).

Color values

HEX	#B1E581
RGB	rgb(177, 229, 129)
HSL	hsl(91, 66%, 70%)
HSV	hsv(91, 44%, 90%)
CMYK	cmyk(22.7%, 0%, 43.7%, 10.2%)
CIE-LAB	lab(85.49, -33.52, 43.34)
CIE-LCH	lch(85.49, 54.79, 127.72°)
OKLab	oklab(86.33% -0.0924 0.1053)
OKLCH	oklch(86.33% 0.14 131.3)
XYZ	xyz(50.1125, 66.9696, 31.0508)
Luminance	0.6697 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1E581 #B581E5

analogous

#E3E581 #B1E581 #81E583

triadic

#B1E581 #81B1E5 #E581B1

tetradic

#B1E581 #81E3E5 #B581E5 #E58381

square

#B1E581 #81E3E5 #B581E5 #E58381

split-complementary

#B1E581 #8381E5 #E581E3

monochromatic

#73C328 #92DB4E #B1E581 #D0EFB4 #EFFAE6

Accessibility & contrast

On white

1.46

#B1E581 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.39

#B1E581 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1E581

14.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1E581	#FFFFFF	#000000	##000000
##B1E581	1.00	1.46	14.39	14.39
#FFFFFF	1.46	1.00	21.00	21.00
#000000	14.39	21.00	1.00	1.00
##000000	14.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EDD879

Deuteranopia (green-blind)

#E5D487

Tritanopia (blue-blind)

#B3DECD

Achromatopsia (no color)

#D6D6D6

Design tokens & code

CSS

--color: #b1e581;
/* rgb */ color: rgb(177, 229, 129);
/* oklch */ color: oklch(86.3% 0.140 131.3);

Tailwind

colors: {
  custom: {
    50: '#caeda7',
    500: '#b1e581',
    950: '#000000',
  },
}

SCSS

$custom: #b1e581;
$custom-light: #caeda7;
$custom-dark: #000000;

JSON

{
  "hex": "#b1e581",
  "rgb": {
    "r": 177,
    "g": 229,
    "b": 129
  },
  "hsl": {
    "h": 91.2,
    "s": 65.789,
    "l": 70.196
  },
  "oklch": {
    "l": 0.86326,
    "c": 0.1401,
    "h": 131.3
  },
  "luminance": 0.66971
}

Semantic roles & 50–950 ramp

primary

#B1E581

secondary

#874DBD

accent

#18CE76

background

#FEFFFC

surface

#FAFEF6

border

#D3D6D0

text

#13160F

muted

#838580

Preview Lab

Preview with #B1E581

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

Preview Lab → · Contrast checker → · Palette generator →