#1B370B#1B370B

#1B370B is a dark, moderate yellow-green. Relative luminance 0.030; OKLCH L 30.4% C 0.077 H 136.3°. Best body text is #FFFFFF at 13.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B370B
RGB	rgb(27, 55, 11)
HSL	hsl(98, 67%, 13%)
HSV	hsv(98, 80%, 22%)
CMYK	cmyk(50.9%, 0%, 80%, 78.4%)
CIE-LAB	lab(20.00, -19.99, 23.12)
CIE-LCH	lch(20.00, 30.57, 130.85°)
OKLab	oklab(30.37% -0.0555 0.0531)
OKLCH	oklch(30.37% 0.077 136.3)
XYZ	xyz(1.8785, 2.9894, 0.7946)
Luminance	0.0299 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Forest Green (survey)

#06470C

ΔE00 6.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B370B #270B37

analogous

#31370B #1B370B #0B3711

triadic

#1B370B #0B1B37 #370B1B

tetradic

#1B370B #0B3137 #270B37 #37110B

square

#1B370B #0B3137 #270B37 #37110B

split-complementary

#1B370B #110B37 #370B31

monochromatic

#0D1A05 #0D1A05 #1B370B #346A15 #4D9D1F

Accessibility & contrast

On white

13.14

#1B370B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B370B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B370B

13.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B370B	#FFFFFF	#000000	##FFFFFF
##1B370B	1.00	13.14	1.60	13.14
#FFFFFF	13.14	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393205

Deuteranopia (green-blind)

#352F0F

Tritanopia (blue-blind)

#1A352E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b370b;
/* rgb */ color: rgb(27, 55, 11);
/* oklch */ color: oklch(30.4% 0.077 136.3);

Tailwind

colors: {
  custom: {
    50: '#5a6e4d',
    500: '#1b370b',
    950: '#000000',
  },
}

SCSS

$custom: #1b370b;
$custom-light: #5a6e4d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b370b",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 11
  },
  "hsl": {
    "h": 98.182,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.30365,
    "c": 0.0768,
    "h": 136.3
  },
  "luminance": 0.0299
}

Semantic roles & 50–950 ramp

primary

#1B370B

secondary

#592A74

accent

#3EEAAB

background

#F5F6F4

surface

#E9EBE7

border

#C5C6C3

text

#040701

muted

#797A77

Preview Lab

Preview with #1B370B

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

Preview Lab → · Contrast checker → · Palette generator →