#1B210B#1B210B

#1B210B is a very dark, muted yellow-green. Relative luminance 0.013; OKLCH L 23.5% C 0.039 H 122.0°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B210B
RGB	rgb(27, 33, 11)
HSL	hsl(76, 50%, 9%)
HSV	hsv(76, 67%, 13%)
CMYK	cmyk(18.2%, 0%, 66.7%, 87.1%)
CIE-LAB	lab(11.59, -7.33, 12.53)
CIE-LCH	lch(11.59, 14.51, 120.31°)
OKLab	oklab(23.53% -0.0206 0.033)
OKLCH	oklch(23.53% 0.039 122)
XYZ	xyz(1.0563, 1.3449, 0.5205)
Luminance	0.0135 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B210B #110B21

analogous

#211C0B #1B210B #10210B

triadic

#1B210B #0B1B21 #210B1B

tetradic

#1B210B #0B211C #110B21 #210B10

square

#1B210B #0B211C #110B21 #210B10

split-complementary

#1B210B #0B1021 #1C0B21

monochromatic

#131708 #131708 #1B210B #414F1A #667D2A

Accessibility & contrast

On white

16.55

#1B210B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#1B210B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B210B

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B210B	#FFFFFF	#000000	##FFFFFF
##1B210B	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231F09

Deuteranopia (green-blind)

#221F0C

Tritanopia (blue-blind)

#1D1F1C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1b210b;
/* rgb */ color: rgb(27, 33, 11);
/* oklch */ color: oklch(23.5% 0.039 122.0);

Tailwind

colors: {
  custom: {
    50: '#575c4b',
    500: '#1b210b',
    950: '#000000',
  },
}

SCSS

$custom: #1b210b;
$custom-light: #575c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b210b",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 11
  },
  "hsl": {
    "h": 76.364,
    "s": 50,
    "l": 8.627
  },
  "oklch": {
    "l": 0.23527,
    "c": 0.0389,
    "h": 122
  },
  "luminance": 0.01345
}

Semantic roles & 50–950 ramp

primary

#1B210B

secondary

#392C5C

accent

#4EDA74

background

#F5F5F4

surface

#E9E9E7

border

#C5C5C3

text

#030401

muted

#787977

Preview Lab

Preview with #1B210B

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

Preview Lab → · Contrast checker → · Palette generator →