#B1BF31#B1BF31

#B1BF31 is a light, vivid yellow. Relative luminance 0.468; OKLCH L 76.9% C 0.159 H 115.2°. Best body text is #000000 at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#B1BF31
RGB	rgb(177, 191, 49)
HSL	hsl(66, 59%, 47%)
HSV	hsv(66, 74%, 75%)
CMYK	cmyk(7.3%, 0%, 74.3%, 25.1%)
CIE-LAB	lab(74.08, -22.16, 65.14)
CIE-LCH	lch(74.08, 68.81, 108.79°)
OKLab	oklab(76.9% -0.0675 0.1436)
OKLCH	oklch(76.9% 0.159 115.2)
XYZ	xyz(37.3177, 46.8311, 9.9786)
Luminance	0.4683 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1BF31 #3F31BF

analogous

#BF8631 #B1BF31 #6ABF31

triadic

#B1BF31 #31B1BF #BF31B1

tetradic

#B1BF31 #31BF86 #3F31BF #BF316A

square

#B1BF31 #31BF86 #3F31BF #BF316A

split-complementary

#B1BF31 #316ABF #8631BF

monochromatic

#575E18 #848E25 #B1BF31 #C8D459 #D8E18A

Accessibility & contrast

On white

2.03

#B1BF31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.37

#B1BF31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1BF31

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1BF31	#FFFFFF	#000000	##000000
##B1BF31	1.00	2.03	10.37	10.37
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.37	21.00	1.00	1.00
##000000	10.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CDB511

Deuteranopia (green-blind)

#CCB73D

Tritanopia (blue-blind)

#BDB4A4

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #b1bf31;
/* rgb */ color: rgb(177, 191, 49);
/* oklch */ color: oklch(76.9% 0.159 115.2);

Tailwind

colors: {
  custom: {
    50: '#ccd274',
    500: '#b1bf31',
    950: '#000000',
  },
}

SCSS

$custom: #b1bf31;
$custom-light: #ccd274;
$custom-dark: #000000;

JSON

{
  "hex": "#b1bf31",
  "rgb": {
    "r": 177,
    "g": 191,
    "b": 49
  },
  "hsl": {
    "h": 65.915,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.76898,
    "c": 0.15867,
    "h": 115.2
  },
  "luminance": 0.4683
}

Semantic roles & 50–950 ramp

primary

#B1BF31

secondary

#8881CB

accent

#45E255

background

#FDFCF7

surface

#FAF9ED

border

#D3D2C8

text

#141409

muted

#83827B

Preview Lab

Preview with #B1BF31

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

Preview Lab → · Contrast checker → · Palette generator →