#3F510C#3F510C

#3F510C is a dark, moderate yellow-green. Relative luminance 0.070; OKLCH L 40.6% C 0.093 H 123.8°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F510C
RGB	rgb(63, 81, 12)
HSL	hsl(76, 74%, 18%)
HSV	hsv(76, 85%, 32%)
CMYK	cmyk(22.2%, 0%, 85.2%, 68.2%)
CIE-LAB	lab(31.73, -17.67, 35.16)
CIE-LCH	lch(31.73, 39.35, 116.69°)
OKLab	oklab(40.55% -0.0517 0.0773)
OKLCH	oklch(40.55% 0.093 123.8)
XYZ	xyz(5.0588, 6.9681, 1.4262)
Luminance	0.0697 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F510C #1E0C51

analogous

#51400C #3F510C #1C510C

triadic

#3F510C #0C3F51 #510C3F

tetradic

#3F510C #0C5140 #1E0C51 #510C1C

square

#3F510C #0C5140 #1E0C51 #510C1C

split-complementary

#3F510C #0C1C51 #400C51

monochromatic

#151B04 #161C04 #3F510C #688614 #92BC1C

Accessibility & contrast

On white

8.77

#3F510C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F510C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F510C

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F510C	#FFFFFF	#000000	##FFFFFF
##3F510C	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564B00

Deuteranopia (green-blind)

#544B13

Tritanopia (blue-blind)

#434C44

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f510c;
/* rgb */ color: rgb(63, 81, 12);
/* oklch */ color: oklch(40.6% 0.093 123.8);

Tailwind

colors: {
  custom: {
    50: '#778152',
    500: '#3f510c',
    950: '#000000',
  },
}

SCSS

$custom: #3f510c;
$custom-light: #778152;
$custom-dark: #000000;

JSON

{
  "hex": "#3f510c",
  "rgb": {
    "r": 63,
    "g": 81,
    "b": 12
  },
  "hsl": {
    "h": 75.652,
    "s": 74.194,
    "l": 18.235
  },
  "oklch": {
    "l": 0.4055,
    "c": 0.09299,
    "h": 123.8
  },
  "luminance": 0.06968
}

Semantic roles & 50–950 ramp

primary

#3F510C

secondary

#452C8C

accent

#37F167

background

#F7F7F4

surface

#EDEEE7

border

#C8C9C3

text

#090A02

muted

#7B7C78

Preview Lab

Preview with #3F510C

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

Preview Lab → · Contrast checker → · Palette generator →