#A1B01B#A1B01B

#A1B01B is a light, vivid yellow. Relative luminance 0.387; OKLCH L 72.1% C 0.158 H 115.9°. Best body text is #000000 at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#A1B01B
RGB	rgb(161, 176, 27)
HSL	hsl(66, 73%, 40%)
HSV	hsv(66, 85%, 69%)
CMYK	cmyk(8.5%, 0%, 84.7%, 31%)
CIE-LAB	lab(68.54, -22.37, 66.00)
CIE-LCH	lch(68.54, 69.69, 108.72°)
OKLab	oklab(72.11% -0.0689 0.1422)
OKLCH	oklch(72.11% 0.158 115.9)
XYZ	xyz(30.4220, 38.7074, 6.9054)
Luminance	0.3871 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A1B01B #2A1BB0

analogous

#B0741B #A1B01B #57B01B

triadic

#A1B01B #1BA1B0 #B01BA1

tetradic

#A1B01B #1BB074 #2A1BB0 #B01B57

square

#A1B01B #1BB074 #2A1BB0 #B01B57

split-complementary

#A1B01B #1B57B0 #741BB0

monochromatic

#40460B #707B13 #A1B01B #CCDE2A #D9E65F

Accessibility & contrast

On white

2.40

#A1B01B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.74

#A1B01B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #A1B01B

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A1B01B	#FFFFFF	#000000	##000000
##A1B01B	1.00	2.40	8.74	8.74
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.74	21.00	1.00	1.00
##000000	8.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDA600

Deuteranopia (green-blind)

#BCA82C

Tritanopia (blue-blind)

#ACA596

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #a1b01b;
/* rgb */ color: rgb(161, 176, 27);
/* oklch */ color: oklch(72.1% 0.158 115.9);

Tailwind

colors: {
  custom: {
    50: '#c1c769',
    500: '#a1b01b',
    950: '#000000',
  },
}

SCSS

$custom: #a1b01b;
$custom-light: #c1c769;
$custom-dark: #000000;

JSON

{
  "hex": "#a1b01b",
  "rgb": {
    "r": 161,
    "g": 176,
    "b": 27
  },
  "hsl": {
    "h": 66.04,
    "s": 73.399,
    "l": 39.804
  },
  "oklch": {
    "l": 0.72115,
    "c": 0.15803,
    "h": 115.9
  },
  "luminance": 0.38707
}

Semantic roles & 50–950 ramp

primary

#A1B01B

secondary

#675CCB

accent

#38F04A

background

#FCFCF6

surface

#F8F8EC

border

#D1D1C7

text

#131307

muted

#82827A

Preview Lab

Preview with #A1B01B

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

Preview Lab → · Contrast checker → · Palette generator →