#B3B01F#B3B01F

#B3B01F is a light, vivid yellow. Relative luminance 0.407; OKLCH L 73.6% C 0.152 H 108.3°. Best body text is #000000 at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#B3B01F
RGB	rgb(179, 176, 31)
HSL	hsl(59, 70%, 41%)
HSV	hsv(59, 83%, 70%)
CMYK	cmyk(0%, 1.7%, 82.7%, 29.8%)
CIE-LAB	lab(69.99, -14.44, 66.83)
CIE-LCH	lch(69.99, 68.37, 102.20°)
OKLab	oklab(73.63% -0.0476 0.1439)
OKLCH	oklch(73.63% 0.152 108.3)
XYZ	xyz(34.3645, 40.7345, 7.3484)
Luminance	0.4073 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3B01F #1F22B3

analogous

#B3661F #B3B01F #6CB31F

triadic

#B3B01F #1FB3B0 #B01FB3

tetradic

#B3B01F #1FB366 #1F22B3 #B31F6C

square

#B3B01F #1FB366 #1F22B3 #B31F6C

split-complementary

#B3B01F #1F6CB3 #661FB3

monochromatic

#4B490D #7F7D16 #B3B01F #DCD833 #E5E268

Accessibility & contrast

On white

2.30

#B3B01F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.15

#B3B01F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B3B01F

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3B01F	#FFFFFF	#000000	##000000
##B3B01F	1.00	2.30	9.15	9.15
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.15	21.00	1.00	1.00
##000000	9.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFA900

Deuteranopia (green-blind)

#C1AD2D

Tritanopia (blue-blind)

#C1A496

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #b3b01f;
/* rgb */ color: rgb(179, 176, 31);
/* oklch */ color: oklch(73.6% 0.152 108.3);

Tailwind

colors: {
  custom: {
    50: '#cec76a',
    500: '#b3b01f',
    950: '#000000',
  },
}

SCSS

$custom: #b3b01f;
$custom-light: #cec76a;
$custom-dark: #000000;

JSON

{
  "hex": "#b3b01f",
  "rgb": {
    "r": 179,
    "g": 176,
    "b": 31
  },
  "hsl": {
    "h": 58.784,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.73635,
    "c": 0.15157,
    "h": 108.3
  },
  "luminance": 0.40733
}

Semantic roles & 50–950 ramp

primary

#B3B01F

secondary

#6466CA

accent

#3EED3B

background

#FDFCF6

surface

#FAF8EC

border

#D3D1C7

text

#141307

muted

#83827A

Preview Lab

Preview with #B3B01F

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

Preview Lab → · Contrast checker → · Palette generator →