#B1BB31#B1BB31

#B1BB31 is a light, vivid yellow. Relative luminance 0.451; OKLCH L 76.0% C 0.154 H 113.7°. Best body text is #000000 at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#B1BB31
RGB	rgb(177, 187, 49)
HSL	hsl(64, 58%, 46%)
HSV	hsv(64, 74%, 73%)
CMYK	cmyk(5.3%, 0%, 73.8%, 26.7%)
CIE-LAB	lab(72.96, -20.18, 64.09)
CIE-LCH	lch(72.96, 67.19, 107.48°)
OKLab	oklab(76% -0.062 0.1414)
OKLCH	oklch(76% 0.154 113.7)
XYZ	xyz(36.4573, 45.1103, 9.6918)
Luminance	0.4511 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1BB31 #3B31BB

analogous

#BB8031 #B1BB31 #6CBB31

triadic

#B1BB31 #31B1BB #BB31B1

tetradic

#B1BB31 #31BB80 #3B31BB #BB316C

square

#B1BB31 #31BB80 #3B31BB #BB316C

split-complementary

#B1BB31 #316CBB #8031BB

monochromatic

#555A18 #838B24 #B1BB31 #CAD356 #D9E087

Accessibility & contrast

On white

2.10

#B1BB31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.02

#B1BB31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1BB31

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1BB31	#FFFFFF	#000000	##000000
##B1BB31	1.00	2.10	10.02	10.02
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.02	21.00	1.00	1.00
##000000	10.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C9B213

Deuteranopia (green-blind)

#C9B43C

Tritanopia (blue-blind)

#BDB0A1

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #b1bb31;
/* rgb */ color: rgb(177, 187, 49);
/* oklch */ color: oklch(76.0% 0.154 113.7);

Tailwind

colors: {
  custom: {
    50: '#cccf73',
    500: '#b1bb31',
    950: '#000000',
  },
}

SCSS

$custom: #b1bb31;
$custom-light: #cccf73;
$custom-dark: #000000;

JSON

{
  "hex": "#b1bb31",
  "rgb": {
    "r": 177,
    "g": 187,
    "b": 49
  },
  "hsl": {
    "h": 64.348,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.76002,
    "c": 0.15437,
    "h": 113.7
  },
  "luminance": 0.4511
}

Semantic roles & 50–950 ramp

primary

#B1BB31

secondary

#847FC9

accent

#46E251

background

#FDFCF7

surface

#FAF9ED

border

#D3D2C8

text

#141309

muted

#83827B

Preview Lab

Preview with #B1BB31

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

Preview Lab → · Contrast checker → · Palette generator →