#B1C637#B1C637

#B1C637 is a light, vivid yellow. Relative luminance 0.500; OKLCH L 78.5% C 0.163 H 117.7°. Best body text is #000000 at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#B1C637
RGB	rgb(177, 198, 55)
HSL	hsl(69, 57%, 50%)
HSV	hsv(69, 72%, 78%)
CMYK	cmyk(10.6%, 0%, 72.2%, 22.4%)
CIE-LAB	lab(76.08, -25.28, 65.01)
CIE-LCH	lch(76.08, 69.75, 111.25°)
OKLab	oklab(78.51% -0.0757 0.1443)
OKLCH	oklch(78.51% 0.163 117.7)
XYZ	xyz(39.0160, 50.0115, 11.2115)
Luminance	0.5001 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1C637 #4C37C6

analogous

#C69437 #B1C637 #6AC637

triadic

#B1C637 #37B1C6 #C637B1

tetradic

#B1C637 #37C694 #4C37C6 #C6376A

square

#B1C637 #37C694 #4C37C6 #C6376A

split-complementary

#B1C637 #376AC6 #9437C6

monochromatic

#5B661C #86962A #B1C637 #C4D466 #D7E296

Accessibility & contrast

On white

1.91

#B1C637 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.00

#B1C637 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1C637

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1C637	#FFFFFF	#000000	##000000
##B1C637	1.00	1.91	11.00	11.00
#FFFFFF	1.91	1.00	21.00	21.00
#000000	11.00	21.00	1.00	1.00
##000000	11.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BB1C

Deuteranopia (green-blind)

#D1BC43

Tritanopia (blue-blind)

#BCBBAA

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #b1c637;
/* rgb */ color: rgb(177, 198, 55);
/* oklch */ color: oklch(78.5% 0.163 117.7);

Tailwind

colors: {
  custom: {
    50: '#ccd778',
    500: '#b1c637',
    950: '#000000',
  },
}

SCSS

$custom: #b1c637;
$custom-light: #ccd778;
$custom-dark: #000000;

JSON

{
  "hex": "#b1c637",
  "rgb": {
    "r": 177,
    "g": 198,
    "b": 55
  },
  "hsl": {
    "h": 68.811,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.78511,
    "c": 0.16295,
    "h": 117.7
  },
  "luminance": 0.50011
}

Semantic roles & 50–950 ramp

primary

#B1C637

secondary

#3A3170

accent

#48E05E

background

#FEFEFB

surface

#FBFBF1

border

#D4D4CB

text

#141409

muted

#83837D

Preview Lab

Preview with #B1C637

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

Preview Lab → · Contrast checker → · Palette generator →