#A1B31B#A1B31B

#A1B31B is a light, vivid yellow. Relative luminance 0.399; OKLCH L 72.8% C 0.161 H 116.9°. Best body text is #000000 at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#A1B31B
RGB	rgb(161, 179, 27)
HSL	hsl(67, 74%, 40%)
HSV	hsv(67, 85%, 70%)
CMYK	cmyk(10.1%, 0%, 84.9%, 29.8%)
CIE-LAB	lab(69.40, -23.85, 66.72)
CIE-LCH	lch(69.40, 70.86, 109.67°)
OKLab	oklab(72.8% -0.073 0.1438)
OKLCH	oklch(72.8% 0.161 116.9)
XYZ	xyz(31.0167, 39.8968, 7.1036)
Luminance	0.3990 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A1B31B #2D1BB3

analogous

#B3791B #A1B31B #55B31B

triadic

#A1B31B #1BA1B3 #B31BA1

tetradic

#A1B31B #1BB379 #2D1BB3 #B31B55

square

#A1B31B #1BB379 #2D1BB3 #B31B55

split-complementary

#A1B31B #1B55B3 #791BB3

monochromatic

#41490B #717E13 #A1B31B #CADF2C #D7E761

Accessibility & contrast

On white

2.34

#A1B31B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.98

#A1B31B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #A1B31B

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A1B31B	#FFFFFF	#000000	##000000
##A1B31B	1.00	2.34	8.98	8.98
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.98	21.00	1.00	1.00
##000000	8.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0A900

Deuteranopia (green-blind)

#BEAA2D

Tritanopia (blue-blind)

#ACA899

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #a1b31b;
/* rgb */ color: rgb(161, 179, 27);
/* oklch */ color: oklch(72.8% 0.161 116.9);

Tailwind

colors: {
  custom: {
    50: '#c1c969',
    500: '#a1b31b',
    950: '#000000',
  },
}

SCSS

$custom: #a1b31b;
$custom-light: #c1c969;
$custom-dark: #000000;

JSON

{
  "hex": "#a1b31b",
  "rgb": {
    "r": 161,
    "g": 179,
    "b": 27
  },
  "hsl": {
    "h": 67.105,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.72804,
    "c": 0.16123,
    "h": 116.9
  },
  "luminance": 0.39896
}

Semantic roles & 50–950 ramp

primary

#A1B31B

secondary

#6B5ECC

accent

#37F04D

background

#FCFCF6

surface

#F8F8EC

border

#D1D1C7

text

#131307

muted

#82827A

Preview Lab

Preview with #A1B31B

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

Preview Lab → · Contrast checker → · Palette generator →