#A3B31B#A3B31B

#A3B31B is a light, vivid yellow. Relative luminance 0.401; OKLCH L 73.0% C 0.161 H 116.1°. Best body text is #000000 at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#A3B31B
RGB	rgb(163, 179, 27)
HSL	hsl(66, 74%, 40%)
HSV	hsv(66, 85%, 70%)
CMYK	cmyk(8.9%, 0%, 84.9%, 29.8%)
CIE-LAB	lab(69.55, -23.00, 66.91)
CIE-LCH	lch(69.55, 70.75, 108.97°)
OKLab	oklab(72.96% -0.0707 0.1441)
OKLCH	oklch(72.96% 0.161 116.1)
XYZ	xyz(31.4231, 40.1063, 7.1227)
Luminance	0.4011 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3B31B #2B1BB3

analogous

#B3771B #A3B31B #57B31B

triadic

#A3B31B #1BA3B3 #B31BA3

tetradic

#A3B31B #1BB377 #2B1BB3 #B31B57

square

#A3B31B #1BB377 #2B1BB3 #B31B57

split-complementary

#A3B31B #1B57B3 #771BB3

monochromatic

#42490B #737E13 #A3B31B #CCDF2C #D9E761

Accessibility & contrast

On white

2.33

#A3B31B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.02

#A3B31B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #A3B31B

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3B31B	#FFFFFF	#000000	##000000
##A3B31B	1.00	2.33	9.02	9.02
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.02	21.00	1.00	1.00
##000000	9.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0A900

Deuteranopia (green-blind)

#BFAB2C

Tritanopia (blue-blind)

#AEA899

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #a3b31b;
/* rgb */ color: rgb(163, 179, 27);
/* oklch */ color: oklch(73.0% 0.161 116.1);

Tailwind

colors: {
  custom: {
    50: '#c2c969',
    500: '#a3b31b',
    950: '#000000',
  },
}

SCSS

$custom: #a3b31b;
$custom-light: #c2c969;
$custom-dark: #000000;

JSON

{
  "hex": "#a3b31b",
  "rgb": {
    "r": 163,
    "g": 179,
    "b": 27
  },
  "hsl": {
    "h": 66.316,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.72961,
    "c": 0.16051,
    "h": 116.1
  },
  "luminance": 0.40106
}

Semantic roles & 50–950 ramp

primary

#A3B31B

secondary

#6A5ECC

accent

#37F04B

background

#FCFCF6

surface

#F8F8EC

border

#D1D1C7

text

#131307

muted

#82827A

Preview Lab

Preview with #A3B31B

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

Preview Lab → · Contrast checker → · Palette generator →