#1F310A#1F310A

#1F310A is a dark, moderate yellow-green. Relative luminance 0.025; OKLCH L 28.8% C 0.065 H 130.8°. Best body text is #FFFFFF at 13.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F310A
RGB	rgb(31, 49, 10)
HSL	hsl(88, 66%, 12%)
HSV	hsv(88, 80%, 19%)
CMYK	cmyk(36.7%, 0%, 79.6%, 80.8%)
CIE-LAB	lab(17.96, -15.17, 21.23)
CIE-LCH	lch(17.96, 26.09, 125.54°)
OKLab	oklab(28.76% -0.0428 0.0495)
OKLCH	oklch(28.76% 0.065 130.8)
XYZ	xyz(1.7182, 2.5098, 0.6810)
Luminance	0.0251 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F310A #1C0A31

analogous

#31300A #1F310A #0C310A

triadic

#1F310A #0A1F31 #310A1F

tetradic

#1F310A #0A3130 #1C0A31 #310A0C

square

#1F310A #0A3130 #1C0A31 #310A0C

split-complementary

#1F310A #0A0C31 #300A31

monochromatic

#101905 #101905 #1F310A #3F6414 #5F971F

Accessibility & contrast

On white

13.98

#1F310A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1F310A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F310A

13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F310A	#FFFFFF	#000000	##FFFFFF
##1F310A	1.00	13.98	1.50	13.98
#FFFFFF	13.98	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#342D05

Deuteranopia (green-blind)

#312B0D

Tritanopia (blue-blind)

#202F29

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f310a;
/* rgb */ color: rgb(31, 49, 10);
/* oklch */ color: oklch(28.8% 0.065 130.8);

Tailwind

colors: {
  custom: {
    50: '#5c694c',
    500: '#1f310a',
    950: '#000000',
  },
}

SCSS

$custom: #1f310a;
$custom-light: #5c694c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f310a",
  "rgb": {
    "r": 31,
    "g": 49,
    "b": 10
  },
  "hsl": {
    "h": 87.692,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.28764,
    "c": 0.06545,
    "h": 130.8
  },
  "luminance": 0.0251
}

Semantic roles & 50–950 ramp

primary

#1F310A

secondary

#49296E

accent

#3FE98D

background

#F5F6F4

surface

#E9EBE7

border

#C5C6C3

text

#040601

muted

#797A77

Preview Lab

Preview with #1F310A

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

Preview Lab → · Contrast checker → · Palette generator →