#1B370A#1B370A

#1B370A is a dark, moderate yellow-green. Relative luminance 0.030; OKLCH L 30.4% C 0.078 H 136.0°. Best body text is #FFFFFF at 13.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B370A
RGB	rgb(27, 55, 10)
HSL	hsl(97, 69%, 13%)
HSV	hsv(97, 82%, 22%)
CMYK	cmyk(50.9%, 0%, 81.8%, 78.4%)
CIE-LAB	lab(19.99, -20.09, 23.53)
CIE-LCH	lch(19.99, 30.94, 130.49°)
OKLab	oklab(30.35% -0.0559 0.0539)
OKLCH	oklch(30.35% 0.078 136)
XYZ	xyz(1.8729, 2.9872, 0.7650)
Luminance	0.0299 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Forest Green (survey)

#06470C

ΔE00 6.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B370A #260A37

analogous

#31370A #1B370A #0A370F

triadic

#1B370A #0A1B37 #370A1B

tetradic

#1B370A #0A3137 #260A37 #370F0A

square

#1B370A #0A3137 #260A37 #370F0A

split-complementary

#1B370A #0F0A37 #370A31

monochromatic

#0D1A05 #0D1A05 #1B370A #346B13 #4E9F1D

Accessibility & contrast

On white

13.15

#1B370A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B370A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B370A

13.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B370A	#FFFFFF	#000000	##FFFFFF
##1B370A	1.00	13.15	1.60	13.15
#FFFFFF	13.15	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393204

Deuteranopia (green-blind)

#352F0E

Tritanopia (blue-blind)

#1A352E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b370a;
/* rgb */ color: rgb(27, 55, 10);
/* oklch */ color: oklch(30.4% 0.078 136.0);

Tailwind

colors: {
  custom: {
    50: '#5a6e4c',
    500: '#1b370a',
    950: '#000000',
  },
}

SCSS

$custom: #1b370a;
$custom-light: #5a6e4c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b370a",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 10
  },
  "hsl": {
    "h": 97.333,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.30355,
    "c": 0.07762,
    "h": 136
  },
  "luminance": 0.02987
}

Semantic roles & 50–950 ramp

primary

#1B370A

secondary

#582874

accent

#3CECA9

background

#F5F6F4

surface

#E9EBE7

border

#C5C6C3

text

#040701

muted

#797A77

Preview Lab

Preview with #1B370A

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

Preview Lab → · Contrast checker → · Palette generator →