#B1CA28#B1CA28

#B1CA28 is a light, vivid yellow. Relative luminance 0.517; OKLCH L 79.3% C 0.175 H 118.6°. Best body text is #000000 at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#B1CA28
RGB	rgb(177, 202, 40)
HSL	hsl(69, 67%, 47%)
HSV	hsv(69, 80%, 79%)
CMYK	cmyk(12.4%, 0%, 80.2%, 20.8%)
CIE-LAB	lab(77.13, -27.85, 70.61)
CIE-LCH	lch(77.13, 75.90, 111.53°)
OKLab	oklab(79.33% -0.0839 0.1537)
OKLCH	oklch(79.33% 0.175 118.6)
XYZ	xyz(39.6359, 51.7417, 9.9062)
Luminance	0.5174 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1CA28 #4128CA

analogous

#CA9228 #B1CA28 #60CA28

triadic

#B1CA28 #28B1CA #CA28B1

tetradic

#B1CA28 #28CA92 #4128CA #CA2860

square

#B1CA28 #28CA92 #4128CA #CA2860

split-complementary

#B1CA28 #2860CA #9228CA

monochromatic

#576414 #84971E #B1CA28 #C7DD52 #D8E785

Accessibility & contrast

On white

1.85

#B1CA28 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.35

#B1CA28 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1CA28

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1CA28	#FFFFFF	#000000	##000000
##B1CA28	1.00	1.85	11.35	11.35
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.35	21.00	1.00	1.00
##000000	11.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8BE00

Deuteranopia (green-blind)

#D5BF39

Tritanopia (blue-blind)

#BCBFAD

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #b1ca28;
/* rgb */ color: rgb(177, 202, 40);
/* oklch */ color: oklch(79.3% 0.175 118.6);

Tailwind

colors: {
  custom: {
    50: '#ccda71',
    500: '#b1ca28',
    950: '#000000',
  },
}

SCSS

$custom: #b1ca28;
$custom-light: #ccda71;
$custom-dark: #000000;

JSON

{
  "hex": "#b1ca28",
  "rgb": {
    "r": 177,
    "g": 202,
    "b": 40
  },
  "hsl": {
    "h": 69.259,
    "s": 66.942,
    "l": 47.451
  },
  "oklch": {
    "l": 0.79332,
    "c": 0.17508,
    "h": 118.6
  },
  "luminance": 0.51741
}

Semantic roles & 50–950 ramp

primary

#B1CA28

secondary

#33286E

accent

#3EEA58

background

#FEFEFB

surface

#FBFBF1

border

#D4D4CB

text

#141409

muted

#83837D

Preview Lab

Preview with #B1CA28

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

Preview Lab → · Contrast checker → · Palette generator →