#21310B#21310B

#21310B is a dark, moderate yellow-green. Relative luminance 0.025; OKLCH L 28.9% C 0.063 H 129.2°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#21310B
RGB	rgb(33, 49, 11)
HSL	hsl(85, 63%, 12%)
HSV	hsv(85, 78%, 19%)
CMYK	cmyk(32.7%, 0%, 77.6%, 80.8%)
CIE-LAB	lab(18.12, -14.13, 21.03)
CIE-LCH	lch(18.12, 25.34, 123.90°)
OKLab	oklab(28.93% -0.04 0.049)
OKLCH	oklch(28.93% 0.063 129.2)
XYZ	xyz(1.7859, 2.5441, 0.7135)
Luminance	0.0254 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21310B #1B0B31

analogous

#312E0B #21310B #0E310B

triadic

#21310B #0B2131 #310B21

tetradic

#21310B #0B312E #1B0B31 #310B0E

square

#21310B #0B312E #1B0B31 #310B0E

split-complementary

#21310B #0B0E31 #2E0B31

monochromatic

#111906 #111906 #21310B #436316 #649521

Accessibility & contrast

On white

13.92

#21310B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#21310B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21310B

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21310B	#FFFFFF	#000000	##FFFFFF
##21310B	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#342D07

Deuteranopia (green-blind)

#312C0E

Tritanopia (blue-blind)

#222F29

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #21310b;
/* rgb */ color: rgb(33, 49, 11);
/* oklch */ color: oklch(28.9% 0.063 129.2);

Tailwind

colors: {
  custom: {
    50: '#5e694c',
    500: '#21310b',
    950: '#000000',
  },
}

SCSS

$custom: #21310b;
$custom-light: #5e694c;
$custom-dark: #000000;

JSON

{
  "hex": "#21310b",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 11
  },
  "hsl": {
    "h": 85.263,
    "s": 63.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.2893,
    "c": 0.06324,
    "h": 129.2
  },
  "luminance": 0.02544
}

Semantic roles & 50–950 ramp

primary

#21310B

secondary

#472A6E

accent

#41E687

background

#F5F6F4

surface

#E9EBE7

border

#C5C6C3

text

#040601

muted

#797A77

Preview Lab

Preview with #21310B

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

Preview Lab → · Contrast checker → · Palette generator →