#B1C63A#B1C63A

#B1C63A is a light, vivid yellow. Relative luminance 0.500; OKLCH L 78.5% C 0.161 H 117.7°. Best body text is #000000 at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#B1C63A
RGB	rgb(177, 198, 58)
HSL	hsl(69, 55%, 50%)
HSV	hsv(69, 71%, 78%)
CMYK	cmyk(10.6%, 0%, 70.7%, 22.4%)
CIE-LAB	lab(76.09, -25.13, 63.97)
CIE-LCH	lch(76.09, 68.73, 111.45°)
OKLab	oklab(78.53% -0.075 0.1426)
OKLCH	oklch(78.53% 0.161 117.7)
XYZ	xyz(39.0901, 50.0412, 11.6018)
Luminance	0.5004 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1C63A #4F3AC6

analogous

#C6953A #B1C63A #6BC63A

triadic

#B1C63A #3AB1C6 #C63AB1

tetradic

#B1C63A #3AC695 #4F3AC6 #C63A6B

square

#B1C63A #3AC695 #4F3AC6 #C63A6B

split-complementary

#B1C63A #3A6BC6 #953AC6

monochromatic

#5D681E #87972C #B1C63A #C4D469 #D7E199

Accessibility & contrast

On white

1.91

#B1C63A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.01

#B1C63A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1C63A

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1C63A	#FFFFFF	#000000	##000000
##B1C63A	1.00	1.91	11.01	11.01
#FFFFFF	1.91	1.00	21.00	21.00
#000000	11.01	21.00	1.00	1.00
##000000	11.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BB22

Deuteranopia (green-blind)

#D1BC45

Tritanopia (blue-blind)

#BCBBAB

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #b1c63a;
/* rgb */ color: rgb(177, 198, 58);
/* oklch */ color: oklch(78.5% 0.161 117.7);

Tailwind

colors: {
  custom: {
    50: '#ccd779',
    500: '#b1c63a',
    950: '#000000',
  },
}

SCSS

$custom: #b1c63a;
$custom-light: #ccd779;
$custom-dark: #000000;

JSON

{
  "hex": "#b1c63a",
  "rgb": {
    "r": 177,
    "g": 198,
    "b": 58
  },
  "hsl": {
    "h": 69,
    "s": 55.118,
    "l": 50.196
  },
  "oklch": {
    "l": 0.78531,
    "c": 0.16112,
    "h": 117.7
  },
  "luminance": 0.50041
}

Semantic roles & 50–950 ramp

primary

#B1C63A

secondary

#3C3272

accent

#49DE60

background

#FEFEFB

surface

#FBFBF2

border

#D4D4CC

text

#14140A

muted

#83837D

Preview Lab

Preview with #B1C63A

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

Preview Lab → · Contrast checker → · Palette generator →