#40831B#40831B

#40831B is a mid, vivid yellow-green. Relative luminance 0.174; OKLCH L 54.5% C 0.151 H 137.1°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#40831B
RGB	rgb(64, 131, 27)
HSL	hsl(99, 66%, 31%)
HSV	hsv(99, 79%, 51%)
CMYK	cmyk(51.1%, 0%, 79.4%, 48.6%)
CIE-LAB	lab(48.76, -39.78, 46.04)
CIE-LCH	lch(48.76, 60.84, 130.83°)
OKLab	oklab(54.51% -0.1104 0.1026)
OKLCH	oklch(54.51% 0.151 137.1)
XYZ	xyz(10.4282, 17.4010, 3.8459)
Luminance	0.1740 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40831B #5E1B83

analogous

#74831B #40831B #1B832A

triadic

#40831B #1B4083 #831B40

tetradic

#40831B #1B7483 #5E1B83 #832A1B

square

#40831B #1B7483 #5E1B83 #832A1B

split-complementary

#40831B #2A1B83 #831B74

monochromatic

#0E1E06 #275011 #40831B #59B625 #76D841

Accessibility & contrast

On white

4.69

#40831B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#40831B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40831B

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40831B	#FFFFFF	#000000	##FFFFFF
##40831B	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#887701

Deuteranopia (green-blind)

#7F7226

Tritanopia (blue-blind)

#3C7E6F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #40831b;
/* rgb */ color: rgb(64, 131, 27);
/* oklch */ color: oklch(54.5% 0.151 137.1);

Tailwind

colors: {
  custom: {
    50: '#7ca860',
    500: '#40831b',
    950: '#000000',
  },
}

SCSS

$custom: #40831b;
$custom-light: #7ca860;
$custom-dark: #000000;

JSON

{
  "hex": "#40831b",
  "rgb": {
    "r": 64,
    "g": 131,
    "b": 27
  },
  "hsl": {
    "h": 98.654,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.54507,
    "c": 0.15076,
    "h": 137.1
  },
  "luminance": 0.17402
}

Semantic roles & 50–950 ramp

primary

#40831B

secondary

#8D43B6

accent

#3FE9AC

background

#F7FAF5

surface

#EEF4EA

border

#C9CEC6

text

#0A0F05

muted

#7C7F79

Preview Lab

Preview with #40831B

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

Preview Lab → · Contrast checker → · Palette generator →