#40581D#40581D

#40581D is a dark, moderate yellow-green. Relative luminance 0.082; OKLCH L 42.7% C 0.090 H 128.5°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#40581D
RGB	rgb(64, 88, 29)
HSL	hsl(84, 50%, 23%)
HSV	hsv(84, 67%, 35%)
CMYK	cmyk(27.3%, 0%, 67%, 65.5%)
CIE-LAB	lab(34.31, -19.71, 30.43)
CIE-LCH	lch(34.31, 36.26, 122.93°)
OKLab	oklab(42.7% -0.0557 0.0702)
OKLCH	oklch(42.7% 0.09 128.5)
XYZ	xyz(5.8258, 8.1580, 2.4299)
Luminance	0.0816 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40581D #351D58

analogous

#58521D #40581D #22581D

triadic

#40581D #1D4058 #581D40

tetradic

#40581D #1D5852 #351D58 #581D22

square

#40581D #1D5852 #351D58 #581D22

split-complementary

#40581D #1D2258 #521D58

monochromatic

#111708 #1F2A0E #40581D #61862C #83B43B

Accessibility & contrast

On white

7.98

#40581D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#40581D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40581D

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40581D	#FFFFFF	#000000	##FFFFFF
##40581D	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)

#5C5216

Deuteranopia (green-blind)

#595021

Tritanopia (blue-blind)

#42544C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #40581d;
/* rgb */ color: rgb(64, 88, 29);
/* oklch */ color: oklch(42.7% 0.090 128.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#40581d",
  "rgb": {
    "r": 64,
    "g": 88,
    "b": 29
  },
  "hsl": {
    "h": 84.407,
    "s": 50.427,
    "l": 22.941
  },
  "oklch": {
    "l": 0.42698,
    "c": 0.08964,
    "h": 128.5
  },
  "luminance": 0.08158
}

Semantic roles & 50–950 ramp

primary

#40581D

secondary

#62448D

accent

#4EDA87

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B04

muted

#7B7C79

Preview Lab

Preview with #40581D

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

Preview Lab → · Contrast checker → · Palette generator →