#3F511B#3F511B

#3F511B is a dark, moderate yellow-green. Relative luminance 0.070; OKLCH L 40.7% C 0.081 H 125.5°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F511B
RGB	rgb(63, 81, 27)
HSL	hsl(80, 50%, 21%)
HSV	hsv(80, 67%, 32%)
CMYK	cmyk(22.2%, 0%, 66.7%, 68.2%)
CIE-LAB	lab(31.85, -16.57, 28.72)
CIE-LCH	lch(31.85, 33.16, 119.99°)
OKLab	oklab(40.69% -0.0472 0.0663)
OKLCH	oklch(40.69% 0.081 125.5)
XYZ	xyz(5.1902, 7.0207, 2.1184)
Luminance	0.0702 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F511B #2D1B51

analogous

#51481B #3F511B #24511B

triadic

#3F511B #1B3F51 #511B3F

tetradic

#3F511B #1B5148 #2D1B51 #511B24

square

#3F511B #1B5148 #2D1B51 #511B24

split-complementary

#3F511B #1B2451 #481B51

monochromatic

#121708 #1B230C #3F511B #637F2A #86AD3A

Accessibility & contrast

On white

8.73

#3F511B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3F511B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F511B

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F511B	#FFFFFF	#000000	##FFFFFF
##3F511B	1.00	8.73	2.40	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554C15

Deuteranopia (green-blind)

#534B1F

Tritanopia (blue-blind)

#424D46

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f511b;
/* rgb */ color: rgb(63, 81, 27);
/* oklch */ color: oklch(40.7% 0.081 125.5);

Tailwind

colors: {
  custom: {
    50: '#76825a',
    500: '#3f511b',
    950: '#000000',
  },
}

SCSS

$custom: #3f511b;
$custom-light: #76825a;
$custom-dark: #000000;

JSON

{
  "hex": "#3f511b",
  "rgb": {
    "r": 63,
    "g": 81,
    "b": 27
  },
  "hsl": {
    "h": 80,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.40685,
    "c": 0.08138,
    "h": 125.5
  },
  "luminance": 0.07021
}

Semantic roles & 50–950 ramp

primary

#3F511B

secondary

#584187

accent

#4EDA7D

background

#F7F7F5

surface

#EDEEE9

border

#C8C9C5

text

#080A04

muted

#7B7C79

Preview Lab

Preview with #3F511B

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

Preview Lab → · Contrast checker → · Palette generator →