#B1C73F#B1C73F

#B1C73F is a light, vivid yellow. Relative luminance 0.506; OKLCH L 78.8% C 0.159 H 118.2°. Best body text is #000000 at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#B1C73F
RGB	rgb(177, 199, 63)
HSL	hsl(70, 55%, 51%)
HSV	hsv(70, 68%, 78%)
CMYK	cmyk(11.1%, 0%, 68.3%, 22%)
CIE-LAB	lab(76.41, -25.33, 62.43)
CIE-LCH	lch(76.41, 67.37, 112.08°)
OKLab	oklab(78.79% -0.0751 0.1402)
OKLCH	oklch(78.79% 0.159 118.2)
XYZ	xyz(39.4529, 50.5532, 12.3810)
Luminance	0.5055 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1C73F #553FC7

analogous

#C7993F #B1C73F #6DC73F

triadic

#B1C73F #3FB1C7 #C73FB1

tetradic

#B1C73F #3FC799 #553FC7 #C73F6D

square

#B1C73F #3FC799 #553FC7 #C73F6D

split-complementary

#B1C73F #3F6DC7 #993FC7

monochromatic

#606C20 #8A9B2D #B1C73F #C4D56E #D7E39E

Accessibility & contrast

On white

1.89

#B1C73F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.11

#B1C73F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1C73F

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1C73F	#FFFFFF	#000000	##000000
##B1C73F	1.00	1.89	11.11	11.11
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.11	21.00	1.00	1.00
##000000	11.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4BC2A

Deuteranopia (green-blind)

#D2BD49

Tritanopia (blue-blind)

#BBBCAC

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #b1c73f;
/* rgb */ color: rgb(177, 199, 63);
/* oklch */ color: oklch(78.8% 0.159 118.2);

Tailwind

colors: {
  custom: {
    50: '#cbd87c',
    500: '#b1c73f',
    950: '#000000',
  },
}

SCSS

$custom: #b1c73f;
$custom-light: #cbd87c;
$custom-dark: #000000;

JSON

{
  "hex": "#b1c73f",
  "rgb": {
    "r": 177,
    "g": 199,
    "b": 63
  },
  "hsl": {
    "h": 69.706,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.78793,
    "c": 0.15902,
    "h": 118.2
  },
  "luminance": 0.50553
}

Semantic roles & 50–950 ramp

primary

#B1C73F

secondary

#3F3476

accent

#4ADE62

background

#FEFEFB

surface

#FBFBF2

border

#D4D4CC

text

#14140A

muted

#83837D

Preview Lab

Preview with #B1C73F

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

Preview Lab → · Contrast checker → · Palette generator →