#40731B#40731B

#40731B is a mid, vivid yellow-green. Relative luminance 0.134; OKLCH L 50.1% C 0.130 H 135.1°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#40731B
RGB	rgb(64, 115, 27)
HSL	hsl(95, 62%, 28%)
HSV	hsv(95, 77%, 45%)
CMYK	cmyk(44.3%, 0%, 76.5%, 54.9%)
CIE-LAB	lab(43.40, -32.96, 40.80)
CIE-LCH	lch(43.40, 52.45, 128.93°)
OKLab	oklab(50.11% -0.0921 0.0917)
OKLCH	oklch(50.11% 0.13 135.1)
XYZ	xyz(8.4427, 13.4301, 3.1841)
Luminance	0.1343 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40731B #4E1B73

analogous

#6C731B #40731B #1B7322

triadic

#40731B #1B4073 #731B40

tetradic

#40731B #1B6C73 #4E1B73 #73221B

square

#40731B #1B6C73 #4E1B73 #73221B

split-complementary

#40731B #221B73 #731B6C

monochromatic

#0E1906 #24410F #40731B #5CA527 #78D038

Accessibility & contrast

On white

5.70

#40731B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#40731B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40731B

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40731B	#FFFFFF	#000000	##FFFFFF
##40731B	1.00	5.70	3.69	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#77690A

Deuteranopia (green-blind)

#716524

Tritanopia (blue-blind)

#3F6E62

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #40731b;
/* rgb */ color: rgb(64, 115, 27);
/* oklch */ color: oklch(50.1% 0.130 135.1);

Tailwind

colors: {
  custom: {
    50: '#7a9c5e',
    500: '#40731b',
    950: '#000000',
  },
}

SCSS

$custom: #40731b;
$custom-light: #7a9c5e;
$custom-dark: #000000;

JSON

{
  "hex": "#40731b",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 27
  },
  "hsl": {
    "h": 94.773,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.50108,
    "c": 0.12992,
    "h": 135.1
  },
  "luminance": 0.13431
}

Semantic roles & 50–950 ramp

primary

#40731B

secondary

#7D42A8

accent

#43E5A1

background

#F7F9F5

surface

#EEF2E9

border

#C9CCC5

text

#0A0E05

muted

#7C7E79

Preview Lab

Preview with #40731B

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

Preview Lab → · Contrast checker → · Palette generator →