#3F581C#3F581C

#3F581C is a dark, moderate yellow-green. Relative luminance 0.081; OKLCH L 42.6% C 0.091 H 128.9°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F581C
RGB	rgb(63, 88, 28)
HSL	hsl(85, 52%, 23%)
HSV	hsv(85, 68%, 35%)
CMYK	cmyk(28.4%, 0%, 68.2%, 65.5%)
CIE-LAB	lab(34.23, -20.24, 30.82)
CIE-LCH	lch(34.23, 36.87, 123.30°)
OKLab	oklab(42.61% -0.0572 0.0709)
OKLCH	oklch(42.61% 0.091 128.9)
XYZ	xyz(5.7492, 8.1199, 2.3628)
Luminance	0.0812 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F581C #351C58

analogous

#58531C #3F581C #21581C

triadic

#3F581C #1C3F58 #581C3F

tetradic

#3F581C #1C5853 #351C58 #581C21

square

#3F581C #1C5853 #351C58 #581C21

split-complementary

#3F581C #1C2158 #531C58

monochromatic

#111707 #1E2A0D #3F581C #60862B #81B53A

Accessibility & contrast

On white

8.00

#3F581C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3F581C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F581C

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F581C	#FFFFFF	#000000	##FFFFFF
##3F581C	1.00	8.00	2.62	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5215

Deuteranopia (green-blind)

#595021

Tritanopia (blue-blind)

#41544B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f581c;
/* rgb */ color: rgb(63, 88, 28);
/* oklch */ color: oklch(42.6% 0.091 128.9);

Tailwind

colors: {
  custom: {
    50: '#76875b',
    500: '#3f581c',
    950: '#000000',
  },
}

SCSS

$custom: #3f581c;
$custom-light: #76875b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f581c",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 28
  },
  "hsl": {
    "h": 85,
    "s": 51.724,
    "l": 22.745
  },
  "oklch": {
    "l": 0.42613,
    "c": 0.09112,
    "h": 128.9
  },
  "luminance": 0.0812
}

Semantic roles & 50–950 ramp

primary

#3F581C

secondary

#62428E

accent

#4DDB88

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B04

muted

#7B7C79

Preview Lab

Preview with #3F581C

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

Preview Lab → · Contrast checker → · Palette generator →