#1F310D#1F310D

#1F310D is a dark, moderate yellow-green. Relative luminance 0.025; OKLCH L 28.8% C 0.063 H 131.7°. Best body text is #FFFFFF at 13.97:1 contrast (WCAG AA passes).

Color values

HEX	#1F310D
RGB	rgb(31, 49, 13)
HSL	hsl(90, 58%, 12%)
HSV	hsv(90, 73%, 19%)
CMYK	cmyk(36.7%, 0%, 73.5%, 80.8%)
CIE-LAB	lab(17.99, -14.85, 19.94)
CIE-LCH	lch(17.99, 24.86, 126.68°)
OKLab	oklab(28.8% -0.0416 0.0467)
OKLCH	oklch(28.8% 0.063 131.7)
XYZ	xyz(1.7360, 2.5169, 0.7750)
Luminance	0.0252 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F310D #1F0D31

analogous

#31310D #1F310D #0D310D

triadic

#1F310D #0D1F31 #310D1F

tetradic

#1F310D #0D3131 #1F0D31 #310D0D

square

#1F310D #0D3131 #1F0D31 #310D0D

split-complementary

#1F310D #0D0D31 #310D31

monochromatic

#0F1806 #0F1806 #1F310D #3E611A #5C9227

Accessibility & contrast

On white

13.97

#1F310D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1F310D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F310D

13.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F310D	#FFFFFF	#000000	##FFFFFF
##1F310D	1.00	13.97	1.50	13.97
#FFFFFF	13.97	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#332D09

Deuteranopia (green-blind)

#312C10

Tritanopia (blue-blind)

#202F29

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f310d;
/* rgb */ color: rgb(31, 49, 13);
/* oklch */ color: oklch(28.8% 0.063 131.7);

Tailwind

colors: {
  custom: {
    50: '#5c694d',
    500: '#1f310d',
    950: '#000000',
  },
}

SCSS

$custom: #1f310d;
$custom-light: #5c694d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f310d",
  "rgb": {
    "r": 31,
    "g": 49,
    "b": 13
  },
  "hsl": {
    "h": 90,
    "s": 58.065,
    "l": 12.157
  },
  "oklch": {
    "l": 0.28801,
    "c": 0.06253,
    "h": 131.7
  },
  "luminance": 0.02517
}

Semantic roles & 50–950 ramp

primary

#1F310D

secondary

#4D2E6C

accent

#47E194

background

#F5F6F4

surface

#E9EBE7

border

#C5C6C3

text

#040601

muted

#797A77

Preview Lab

Preview with #1F310D

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

Preview Lab → · Contrast checker → · Palette generator →