#B3C63B#B3C63B

#B3C63B is a light, vivid yellow. Relative luminance 0.503; OKLCH L 78.7% C 0.160 H 117.0°. Best body text is #000000 at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#B3C63B
RGB	rgb(179, 198, 59)
HSL	hsl(68, 55%, 50%)
HSV	hsv(68, 70%, 78%)
CMYK	cmyk(9.6%, 0%, 70.2%, 22.4%)
CIE-LAB	lab(76.25, -24.25, 63.80)
CIE-LCH	lch(76.25, 68.26, 110.81°)
OKLab	oklab(78.69% -0.0725 0.1424)
OKLCH	oklch(78.69% 0.16 117)
XYZ	xyz(39.5748, 50.2881, 11.7586)
Luminance	0.5029 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3C63B #4E3BC6

analogous

#C6933B #B3C63B #6EC63B

triadic

#B3C63B #3BB3C6 #C63BB3

tetradic

#B3C63B #3BC693 #4E3BC6 #C63B6E

square

#B3C63B #3BC693 #4E3BC6 #C63B6E

split-complementary

#B3C63B #3B6EC6 #933BC6

monochromatic

#5E681E #89982C #B3C63B #C5D46A #D8E29A

Accessibility & contrast

On white

1.90

#B3C63B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.06

#B3C63B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B3C63B

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3C63B	#FFFFFF	#000000	##000000
##B3C63B	1.00	1.90	11.06	11.06
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.06	21.00	1.00	1.00
##000000	11.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BC23

Deuteranopia (green-blind)

#D2BD46

Tritanopia (blue-blind)

#BEBBAB

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #b3c63b;
/* rgb */ color: rgb(179, 198, 59);
/* oklch */ color: oklch(78.7% 0.160 117.0);

Tailwind

colors: {
  custom: {
    50: '#cdd77a',
    500: '#b3c63b',
    950: '#000000',
  },
}

SCSS

$custom: #b3c63b;
$custom-light: #cdd77a;
$custom-dark: #000000;

JSON

{
  "hex": "#b3c63b",
  "rgb": {
    "r": 179,
    "g": 198,
    "b": 59
  },
  "hsl": {
    "h": 68.201,
    "s": 54.941,
    "l": 50.392
  },
  "oklch": {
    "l": 0.78691,
    "c": 0.1598,
    "h": 117
  },
  "luminance": 0.50288
}

Semantic roles & 50–950 ramp

primary

#B3C63B

secondary

#3C3372

accent

#4ADE5E

background

#FEFEFB

surface

#FBFBF2

border

#D4D4CC

text

#14140A

muted

#83837D

Preview Lab

Preview with #B3C63B

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

Preview Lab → · Contrast checker → · Palette generator →