#1F370A#1F370A

#1F370A is a dark, moderate yellow-green. Relative luminance 0.030; OKLCH L 30.6% C 0.075 H 133.5°. Best body text is #FFFFFF at 13.05:1 contrast (WCAG AA passes).

Color values

HEX	#1F370A
RGB	rgb(31, 55, 10)
HSL	hsl(92, 69%, 13%)
HSV	hsv(92, 82%, 22%)
CMYK	cmyk(43.6%, 0%, 81.8%, 78.4%)
CIE-LAB	lab(20.23, -18.43, 23.85)
CIE-LCH	lch(20.23, 30.14, 127.69°)
OKLab	oklab(30.61% -0.0517 0.0545)
OKLCH	oklch(30.61% 0.075 133.5)
XYZ	xyz(1.9860, 3.0455, 0.7703)
Luminance	0.0305 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Forest Green (survey)

#06470C

ΔE00 7.35

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F370A #220A37

analogous

#35370A #1F370A #0A370B

triadic

#1F370A #0A1F37 #370A1F

tetradic

#1F370A #0A3537 #220A37 #370B0A

square

#1F370A #0A3537 #220A37 #370B0A

split-complementary

#1F370A #0B0A37 #370A35

monochromatic

#0F1A05 #0F1A05 #1F370A #3C6B13 #599F1D

Accessibility & contrast

On white

13.05

#1F370A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1F370A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F370A

13.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F370A	#FFFFFF	#000000	##FFFFFF
##1F370A	1.00	13.05	1.61	13.05
#FFFFFF	13.05	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3204

Deuteranopia (green-blind)

#36300E

Tritanopia (blue-blind)

#1F342E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f370a;
/* rgb */ color: rgb(31, 55, 10);
/* oklch */ color: oklch(30.6% 0.075 133.5);

Tailwind

colors: {
  custom: {
    50: '#5d6e4c',
    500: '#1f370a',
    950: '#000000',
  },
}

SCSS

$custom: #1f370a;
$custom-light: #5d6e4c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f370a",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 10
  },
  "hsl": {
    "h": 92,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.30608,
    "c": 0.07508,
    "h": 133.5
  },
  "luminance": 0.03046
}

Semantic roles & 50–950 ramp

primary

#1F370A

secondary

#512874

accent

#3CEC9A

background

#F5F6F4

surface

#E9EBE7

border

#C5C6C3

text

#040701

muted

#797A77

Preview Lab

Preview with #1F370A

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

Preview Lab → · Contrast checker → · Palette generator →