#40581C#40581C

#40581C is a dark, moderate yellow-green. Relative luminance 0.082; OKLCH L 42.7% C 0.091 H 128.3°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#40581C
RGB	rgb(64, 88, 28)
HSL	hsl(84, 52%, 23%)
HSV	hsv(84, 68%, 35%)
CMYK	cmyk(27.3%, 0%, 68.2%, 65.5%)
CIE-LAB	lab(34.30, -19.81, 30.92)
CIE-LCH	lch(34.30, 36.72, 122.65°)
OKLab	oklab(42.69% -0.0561 0.0711)
OKLCH	oklch(42.69% 0.091 128.3)
XYZ	xyz(5.8137, 8.1532, 2.3658)
Luminance	0.0815 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40581C #341C58

analogous

#58521C #40581C #22581C

triadic

#40581C #1C4058 #581C40

tetradic

#40581C #1C5852 #341C58 #581C22

square

#40581C #1C5852 #341C58 #581C22

split-complementary

#40581C #1C2258 #521C58

monochromatic

#111707 #1E2A0D #40581C #62862B #84B53A

Accessibility & contrast

On white

7.98

#40581C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#40581C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40581C

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40581C	#FFFFFF	#000000	##FFFFFF
##40581C	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5215

Deuteranopia (green-blind)

#595021

Tritanopia (blue-blind)

#42544B

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #40581c;
/* rgb */ color: rgb(64, 88, 28);
/* oklch */ color: oklch(42.7% 0.091 128.3);

Tailwind

colors: {
  custom: {
    50: '#77875b',
    500: '#40581c',
    950: '#000000',
  },
}

SCSS

$custom: #40581c;
$custom-light: #77875b;
$custom-dark: #000000;

JSON

{
  "hex": "#40581c",
  "rgb": {
    "r": 64,
    "g": 88,
    "b": 28
  },
  "hsl": {
    "h": 84,
    "s": 51.724,
    "l": 22.745
  },
  "oklch": {
    "l": 0.42686,
    "c": 0.09055,
    "h": 128.3
  },
  "luminance": 0.08153
}

Semantic roles & 50–950 ramp

primary

#40581C

secondary

#60428E

accent

#4DDB86

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B04

muted

#7B7C79

Preview Lab

Preview with #40581C

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

Preview Lab → · Contrast checker → · Palette generator →