#1B280B#1B280B

#1B280B is a dark, muted yellow-green. Relative luminance 0.018; OKLCH L 25.7% C 0.052 H 129.6°. Best body text is #FFFFFF at 15.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B280B
RGB	rgb(27, 40, 11)
HSL	hsl(87, 57%, 10%)
HSV	hsv(87, 73%, 16%)
CMYK	cmyk(32.5%, 0%, 72.5%, 84.3%)
CIE-LAB	lab(14.26, -11.74, 16.11)
CIE-LCH	lch(14.26, 19.93, 126.07°)
OKLab	oklab(25.68% -0.0329 0.0398)
OKLCH	oklch(25.68% 0.052 129.6)
XYZ	xyz(1.2712, 1.7747, 0.5921)
Luminance	0.0177 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B280B #180B28

analogous

#28270B #1B280B #0C280B

triadic

#1B280B #0B1B28 #280B1B

tetradic

#1B280B #0B2827 #180B28 #280B0C

square

#1B280B #0B2827 #180B28 #280B0C

split-complementary

#1B280B #0B0C28 #270B28

monochromatic

#101807 #101807 #1B280B #3B5818 #5C8825

Accessibility & contrast

On white

15.50

#1B280B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1B280B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B280B

15.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B280B	#FFFFFF	#000000	##FFFFFF
##1B280B	1.00	15.50	1.36	15.50
#FFFFFF	15.50	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2508

Deuteranopia (green-blind)

#28240D

Tritanopia (blue-blind)

#1C2622

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b280b;
/* rgb */ color: rgb(27, 40, 11);
/* oklch */ color: oklch(25.7% 0.052 129.6);

Tailwind

colors: {
  custom: {
    50: '#58624c',
    500: '#1b280b',
    950: '#000000',
  },
}

SCSS

$custom: #1b280b;
$custom-light: #58624c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b280b",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 11
  },
  "hsl": {
    "h": 86.897,
    "s": 56.863,
    "l": 10
  },
  "oklch": {
    "l": 0.25682,
    "c": 0.05162,
    "h": 129.6
  },
  "luminance": 0.01775
}

Semantic roles & 50–950 ramp

primary

#1B280B

secondary

#442B64

accent

#48E08C

background

#F5F5F4

surface

#E9EAE7

border

#C5C6C3

text

#030501

muted

#787977

Preview Lab

Preview with #1B280B

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

Preview Lab → · Contrast checker → · Palette generator →