#B1B31C#B1B31C

#B1B31C is a light, vivid yellow. Relative luminance 0.417; OKLCH L 74.1% C 0.156 H 110.5°. Best body text is #000000 at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#B1B31C
RGB	rgb(177, 179, 28)
HSL	hsl(61, 73%, 41%)
HSV	hsv(61, 84%, 70%)
CMYK	cmyk(1.1%, 0%, 84.4%, 29.8%)
CIE-LAB	lab(70.64, -16.93, 68.04)
CIE-LCH	lch(70.64, 70.11, 103.97°)
OKLab	oklab(74.11% -0.0546 0.1461)
OKLCH	oklch(74.11% 0.156 110.5)
XYZ	xyz(34.4625, 41.6722, 7.3266)
Luminance	0.4167 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1B31C #1E1CB3

analogous

#B36A1C #B1B31C #65B31C

triadic

#B1B31C #1CB1B3 #B31CB1

tetradic

#B1B31C #1CB36A #1E1CB3 #B31C65

square

#B1B31C #1CB36A #1E1CB3 #B31C65

split-complementary

#B1B31C #1C65B3 #6A1CB3

monochromatic

#48490B #7D7E14 #B1B31C #DCDE2E #E5E763

Accessibility & contrast

On white

2.25

#B1B31C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.33

#B1B31C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1B31C

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1B31C	#FFFFFF	#000000	##000000
##B1B31C	1.00	2.25	9.33	9.33
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.33	21.00	1.00	1.00
##000000	9.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AB00

Deuteranopia (green-blind)

#C3AF2C

Tritanopia (blue-blind)

#BEA799

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #b1b31c;
/* rgb */ color: rgb(177, 179, 28);
/* oklch */ color: oklch(74.1% 0.156 110.5);

Tailwind

colors: {
  custom: {
    50: '#ccc96a',
    500: '#b1b31c',
    950: '#000000',
  },
}

SCSS

$custom: #b1b31c;
$custom-light: #ccc96a;
$custom-dark: #000000;

JSON

{
  "hex": "#b1b31c",
  "rgb": {
    "r": 177,
    "g": 179,
    "b": 28
  },
  "hsl": {
    "h": 60.795,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.74114,
    "c": 0.15598,
    "h": 110.5
  },
  "luminance": 0.41671
}

Semantic roles & 50–950 ramp

primary

#B1B31C

secondary

#615FCB

accent

#38F03B

background

#FDFCF6

surface

#FAF8EC

border

#D3D1C7

text

#141307

muted

#83827A

Preview Lab

Preview with #B1B31C

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

Preview Lab → · Contrast checker → · Palette generator →