#B4B731#B4B731

#B4B731 is a light, vivid yellow. Relative luminance 0.438; OKLCH L 75.4% C 0.149 H 110.8°. Best body text is #000000 at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#B4B731
RGB	rgb(180, 183, 49)
HSL	hsl(61, 58%, 45%)
HSV	hsv(61, 73%, 72%)
CMYK	cmyk(1.6%, 0%, 73.2%, 28.2%)
CIE-LAB	lab(72.09, -16.89, 63.34)
CIE-LCH	lch(72.09, 65.56, 104.93°)
OKLab	oklab(75.36% -0.0531 0.1397)
OKLCH	oklch(75.36% 0.149 110.8)
XYZ	xyz(36.3115, 43.7930, 9.4452)
Luminance	0.4379 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4B731 #3431B7

analogous

#B77731 #B4B731 #71B731

triadic

#B4B731 #31B4B7 #B731B4

tetradic

#B4B731 #31B777 #3431B7 #B73171

square

#B4B731 #31B777 #3431B7 #B73171

split-complementary

#B4B731 #3171B7 #7731B7

monochromatic

#555617 #858724 #B4B731 #CED154 #DCDE84

Accessibility & contrast

On white

2.15

#B4B731 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.76

#B4B731 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B4B731

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4B731	#FFFFFF	#000000	##000000
##B4B731	1.00	2.15	9.76	9.76
#FFFFFF	2.15	1.00	21.00	21.00
#000000	9.76	21.00	1.00	1.00
##000000	9.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6AF15

Deuteranopia (green-blind)

#C7B23C

Tritanopia (blue-blind)

#C1AB9D

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #b4b731;
/* rgb */ color: rgb(180, 183, 49);
/* oklch */ color: oklch(75.4% 0.149 110.8);

Tailwind

colors: {
  custom: {
    50: '#cecc73',
    500: '#b4b731',
    950: '#000000',
  },
}

SCSS

$custom: #b4b731;
$custom-light: #cecc73;
$custom-dark: #000000;

JSON

{
  "hex": "#b4b731",
  "rgb": {
    "r": 180,
    "g": 183,
    "b": 49
  },
  "hsl": {
    "h": 61.343,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.7536,
    "c": 0.14942,
    "h": 110.8
  },
  "luminance": 0.43792
}

Semantic roles & 50–950 ramp

primary

#B4B731

secondary

#7E7CC8

accent

#47E14A

background

#FDFCF7

surface

#FAF8ED

border

#D3D1C8

text

#141309

muted

#83827B

Preview Lab

Preview with #B4B731

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

Preview Lab → · Contrast checker → · Palette generator →