#B1BF37#B1BF37

#B1BF37 is a light, vivid yellow. Relative luminance 0.469; OKLCH L 76.9% C 0.155 H 115.3°. Best body text is #000000 at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#B1BF37
RGB	rgb(177, 191, 55)
HSL	hsl(66, 55%, 48%)
HSV	hsv(66, 71%, 75%)
CMYK	cmyk(7.3%, 0%, 71.2%, 25.1%)
CIE-LAB	lab(74.12, -21.87, 63.11)
CIE-LCH	lch(74.12, 66.79, 109.11°)
OKLab	oklab(76.94% -0.0662 0.1403)
OKLCH	oklch(76.94% 0.155 115.3)
XYZ	xyz(37.4528, 46.8852, 10.6905)
Luminance	0.4688 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1BF37 #4537BF

analogous

#BF8937 #B1BF37 #6DBF37

triadic

#B1BF37 #37B1BF #BF37B1

tetradic

#B1BF37 #37BF89 #4537BF #BF376D

square

#B1BF37 #37BF89 #4537BF #BF376D

split-complementary

#B1BF37 #376DBF #8937BF

monochromatic

#59601C #858F29 #B1BF37 #C6D262 #D7DF91

Accessibility & contrast

On white

2.02

#B1BF37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.38

#B1BF37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1BF37

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1BF37	#FFFFFF	#000000	##000000
##B1BF37	1.00	2.02	10.38	10.38
#FFFFFF	2.02	1.00	21.00	21.00
#000000	10.38	21.00	1.00	1.00
##000000	10.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CDB51F

Deuteranopia (green-blind)

#CCB742

Tritanopia (blue-blind)

#BCB4A5

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #b1bf37;
/* rgb */ color: rgb(177, 191, 55);
/* oklch */ color: oklch(76.9% 0.155 115.3);

Tailwind

colors: {
  custom: {
    50: '#ccd277',
    500: '#b1bf37',
    950: '#000000',
  },
}

SCSS

$custom: #b1bf37;
$custom-light: #ccd277;
$custom-dark: #000000;

JSON

{
  "hex": "#b1bf37",
  "rgb": {
    "r": 177,
    "g": 191,
    "b": 55
  },
  "hsl": {
    "h": 66.176,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.76936,
    "c": 0.15514,
    "h": 115.3
  },
  "luminance": 0.46885
}

Semantic roles & 50–950 ramp

primary

#B1BF37

secondary

#8E88CA

accent

#49DF59

background

#FCFCF7

surface

#F9F9EE

border

#D2D2C9

text

#141409

muted

#82827B

Preview Lab

Preview with #B1BF37

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

Preview Lab → · Contrast checker → · Palette generator →