#B1C02B#B1C02B

#B1C02B is a light, vivid yellow. Relative luminance 0.472; OKLCH L 77.1% C 0.163 H 115.5°. Best body text is #000000 at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#B1C02B
RGB	rgb(177, 192, 43)
HSL	hsl(66, 63%, 46%)
HSV	hsv(66, 78%, 75%)
CMYK	cmyk(7.8%, 0%, 77.6%, 24.7%)
CIE-LAB	lab(74.33, -22.91, 67.26)
CIE-LCH	lch(74.33, 71.05, 108.81°)
OKLab	oklab(77.09% -0.0701 0.147)
OKLCH	oklch(77.09% 0.163 115.5)
XYZ	xyz(37.4182, 47.2214, 9.4285)
Luminance	0.4722 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1C02B #3A2BC0

analogous

#C0842B #B1C02B #66C02B

triadic

#B1C02B #2BB1C0 #C02BB1

tetradic

#B1C02B #2BC084 #3A2BC0 #C02B66

square

#B1C02B #2BC084 #3A2BC0 #C02B66

split-complementary

#B1C02B #2B66C0 #842BC0

monochromatic

#555C15 #838E20 #B1C02B #CAD850 #D9E382

Accessibility & contrast

On white

2.01

#B1C02B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.44

#B1C02B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1C02B

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1C02B	#FFFFFF	#000000	##000000
##B1C02B	1.00	2.01	10.44	10.44
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.44	21.00	1.00	1.00
##000000	10.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CEB600

Deuteranopia (green-blind)

#CDB839

Tritanopia (blue-blind)

#BDB5A5

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #b1c02b;
/* rgb */ color: rgb(177, 192, 43);
/* oklch */ color: oklch(77.1% 0.163 115.5);

Tailwind

colors: {
  custom: {
    50: '#ccd271',
    500: '#b1c02b',
    950: '#000000',
  },
}

SCSS

$custom: #b1c02b;
$custom-light: #ccd271;
$custom-dark: #000000;

JSON

{
  "hex": "#b1c02b",
  "rgb": {
    "r": 177,
    "g": 192,
    "b": 43
  },
  "hsl": {
    "h": 66.04,
    "s": 63.404,
    "l": 46.078
  },
  "oklch": {
    "l": 0.77088,
    "c": 0.16288,
    "h": 115.5
  },
  "luminance": 0.47221
}

Semantic roles & 50–950 ramp

primary

#B1C02B

secondary

#837BCC

accent

#41E652

background

#FDFCF7

surface

#FAF9ED

border

#D3D2C8

text

#141409

muted

#83827B

Preview Lab

Preview with #B1C02B

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

Preview Lab → · Contrast checker → · Palette generator →