#B4F251#B4F251

#B4F251 is a very light, vivid yellow-green. Relative luminance 0.738; OKLCH L 88.9% C 0.197 H 128.1°. Best body text is #000000 at 15.76:1 contrast (WCAG AA passes).

Color values

HEX	#B4F251
RGB	rgb(180, 242, 81)
HSL	hsl(83, 86%, 63%)
HSV	hsv(83, 67%, 95%)
CMYK	cmyk(25.6%, 0%, 66.5%, 5.1%)
CIE-LAB	lab(88.83, -42.75, 68.42)
CIE-LCH	lch(88.83, 80.68, 122.00°)
OKLab	oklab(88.92% -0.1217 0.1553)
OKLCH	oklch(88.92% 0.197 128.1)
XYZ	xyz(52.0597, 73.8005, 19.2851)
Luminance	0.7380 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4F251 #8F51F2

analogous

#F2E051 #B4F251 #63F251

triadic

#B4F251 #51B4F2 #F251B4

tetradic

#B4F251 #51F2E0 #8F51F2 #F25163

square

#B4F251 #51F2E0 #8F51F2 #F25163

split-complementary

#B4F251 #5163F2 #E051F2

monochromatic

#78BB0E #9BEE18 #B4F251 #CDF68A #E5FBC3

Accessibility & contrast

On white

1.33

#B4F251 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.76

#B4F251 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B4F251

15.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4F251	#FFFFFF	#000000	##000000
##B4F251	1.00	1.33	15.76	15.76
#FFFFFF	1.33	1.00	21.00	21.00
#000000	15.76	21.00	1.00	1.00
##000000	15.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE23A

Deuteranopia (green-blind)

#F5DE5E

Tritanopia (blue-blind)

#BAE7D2

Achromatopsia (no color)

#DFDFDF

Design tokens & code

CSS

--color: #b4f251;
/* rgb */ color: rgb(180, 242, 81);
/* oklch */ color: oklch(88.9% 0.197 128.1);

Tailwind

colors: {
  custom: {
    50: '#cef68a',
    500: '#b4f251',
    950: '#000000',
  },
}

SCSS

$custom: #b4f251;
$custom-light: #cef68a;
$custom-dark: #000000;

JSON

{
  "hex": "#b4f251",
  "rgb": {
    "r": 180,
    "g": 242,
    "b": 81
  },
  "hsl": {
    "h": 83.106,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.88916,
    "c": 0.19731,
    "h": 128.1
  },
  "luminance": 0.73802
}

Semantic roles & 50–950 ramp

primary

#B4F251

secondary

#642EB9

accent

#03E359

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14170C

muted

#83857F

Preview Lab

Preview with #B4F251

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

Preview Lab → · Contrast checker → · Palette generator →