#3F520B#3F520B

#3F520B is a dark, moderate yellow-green. Relative luminance 0.071; OKLCH L 40.8% C 0.095 H 124.2°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F520B
RGB	rgb(63, 82, 11)
HSL	hsl(76, 76%, 18%)
HSV	hsv(76, 87%, 32%)
CMYK	cmyk(23.2%, 0%, 86.6%, 67.8%)
CIE-LAB	lab(32.07, -18.26, 35.80)
CIE-LCH	lch(32.07, 40.19, 117.03°)
OKLab	oklab(40.82% -0.0534 0.0785)
OKLCH	oklch(40.82% 0.095 124.2)
XYZ	xyz(5.1277, 7.1155, 1.4198)
Luminance	0.0712 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F520B #1E0B52

analogous

#52410B #3F520B #1B520B

triadic

#3F520B #0B3F52 #520B3F

tetradic

#3F520B #0B5241 #1E0B52 #520B1B

square

#3F520B #0B5241 #1E0B52 #520B1B

split-complementary

#3F520B #0B1B52 #410B52

monochromatic

#151B04 #161C04 #3F520B #688812 #92BE19

Accessibility & contrast

On white

8.67

#3F520B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3F520B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F520B

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F520B	#FFFFFF	#000000	##FFFFFF
##3F520B	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574C00

Deuteranopia (green-blind)

#554B13

Tritanopia (blue-blind)

#434D45

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f520b;
/* rgb */ color: rgb(63, 82, 11);
/* oklch */ color: oklch(40.8% 0.095 124.2);

Tailwind

colors: {
  custom: {
    50: '#778251',
    500: '#3f520b',
    950: '#000000',
  },
}

SCSS

$custom: #3f520b;
$custom-light: #778251;
$custom-dark: #000000;

JSON

{
  "hex": "#3f520b",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 11
  },
  "hsl": {
    "h": 76.056,
    "s": 76.344,
    "l": 18.235
  },
  "oklch": {
    "l": 0.40819,
    "c": 0.09491,
    "h": 124.2
  },
  "luminance": 0.07116
}

Semantic roles & 50–950 ramp

primary

#3F520B

secondary

#452B8E

accent

#35F368

background

#F7F7F4

surface

#EDEEE7

border

#C8C9C3

text

#090A02

muted

#7B7C78

Preview Lab

Preview with #3F520B

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

Preview Lab → · Contrast checker → · Palette generator →