#B1B728#B1B728

#B1B728 is a light, vivid yellow. Relative luminance 0.434; OKLCH L 75.1% C 0.155 H 112.1°. Best body text is #000000 at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#B1B728
RGB	rgb(177, 183, 40)
HSL	hsl(63, 64%, 44%)
HSV	hsv(63, 78%, 72%)
CMYK	cmyk(3.3%, 0%, 78.1%, 28.2%)
CIE-LAB	lab(71.80, -18.56, 65.87)
CIE-LCH	lch(71.80, 68.44, 105.73°)
OKLab	oklab(75.06% -0.0583 0.1435)
OKLCH	oklch(75.06% 0.155 112.1)
XYZ	xyz(35.4492, 43.3682, 8.5106)
Luminance	0.4337 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1B728 #2E28B7

analogous

#B77528 #B1B728 #69B728

triadic

#B1B728 #28B1B7 #B728B1

tetradic

#B1B728 #28B775 #2E28B7 #B72869

square

#B1B728 #28B775 #2E28B7 #B72869

split-complementary

#B1B728 #2869B7 #7528B7

monochromatic

#505312 #80851D #B1B728 #D0D646 #DDE178

Accessibility & contrast

On white

2.17

#B1B728 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.67

#B1B728 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1B728

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1B728	#FFFFFF	#000000	##000000
##B1B728	1.00	2.17	9.67	9.67
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.67	21.00	1.00	1.00
##000000	9.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5AE00

Deuteranopia (green-blind)

#C6B235

Tritanopia (blue-blind)

#BDAB9D

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #b1b728;
/* rgb */ color: rgb(177, 183, 40);
/* oklch */ color: oklch(75.1% 0.155 112.1);

Tailwind

colors: {
  custom: {
    50: '#cccc6f',
    500: '#b1b728',
    950: '#000000',
  },
}

SCSS

$custom: #b1b728;
$custom-light: #cccc6f;
$custom-dark: #000000;

JSON

{
  "hex": "#b1b728",
  "rgb": {
    "r": 177,
    "g": 183,
    "b": 40
  },
  "hsl": {
    "h": 62.517,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.75058,
    "c": 0.15492,
    "h": 112.1
  },
  "luminance": 0.43367
}

Semantic roles & 50–950 ramp

primary

#B1B728

secondary

#7572C9

accent

#41E748

background

#FDFCF7

surface

#FAF8ED

border

#D3D1C8

text

#141308

muted

#83827B

Preview Lab

Preview with #B1B728

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

Preview Lab → · Contrast checker → · Palette generator →