#B4C63B#B4C63B

#B4C63B is a light, vivid yellow. Relative luminance 0.504; OKLCH L 78.8% C 0.159 H 116.6°. Best body text is #000000 at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#B4C63B
RGB	rgb(180, 198, 59)
HSL	hsl(68, 55%, 50%)
HSV	hsv(68, 70%, 78%)
CMYK	cmyk(9.1%, 0%, 70.2%, 22.4%)
CIE-LAB	lab(76.32, -23.84, 63.90)
CIE-LCH	lch(76.32, 68.20, 110.46°)
OKLab	oklab(78.77% -0.0715 0.1426)
OKLCH	oklch(78.77% 0.159 116.6)
XYZ	xyz(39.8068, 50.4078, 11.7695)
Luminance	0.5041 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4C63B #4D3BC6

analogous

#C6933B #B4C63B #6EC63B

triadic

#B4C63B #3BB4C6 #C63BB4

tetradic

#B4C63B #3BC693 #4D3BC6 #C63B6E

square

#B4C63B #3BC693 #4D3BC6 #C63B6E

split-complementary

#B4C63B #3B6EC6 #933BC6

monochromatic

#5F681E #8A982C #B4C63B #C6D46A #D8E29A

Accessibility & contrast

On white

1.90

#B4C63B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.08

#B4C63B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B4C63B

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4C63B	#FFFFFF	#000000	##000000
##B4C63B	1.00	1.90	11.08	11.08
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.08	21.00	1.00	1.00
##000000	11.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4BC23

Deuteranopia (green-blind)

#D2BD46

Tritanopia (blue-blind)

#BFBBAB

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #b4c63b;
/* rgb */ color: rgb(180, 198, 59);
/* oklch */ color: oklch(78.8% 0.159 116.6);

Tailwind

colors: {
  custom: {
    50: '#ced77a',
    500: '#b4c63b',
    950: '#000000',
  },
}

SCSS

$custom: #b4c63b;
$custom-light: #ced77a;
$custom-dark: #000000;

JSON

{
  "hex": "#b4c63b",
  "rgb": {
    "r": 180,
    "g": 198,
    "b": 59
  },
  "hsl": {
    "h": 67.77,
    "s": 54.941,
    "l": 50.392
  },
  "oklch": {
    "l": 0.78768,
    "c": 0.15946,
    "h": 116.6
  },
  "luminance": 0.50407
}

Semantic roles & 50–950 ramp

primary

#B4C63B

secondary

#3B3372

accent

#4ADE5D

background

#FEFEFB

surface

#FBFBF2

border

#D4D4CC

text

#14140A

muted

#83837D

Preview Lab

Preview with #B4C63B

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

Preview Lab → · Contrast checker → · Palette generator →