#210B04#210B04

#210B04 is a very dark, muted red. Relative luminance 0.006; OKLCH L 18.3% C 0.041 H 41.3°. Best body text is #FFFFFF at 18.85:1 contrast (WCAG AA passes).

Color values

HEX	#210B04
RGB	rgb(33, 11, 4)
HSL	hsl(14, 78%, 7%)
HSV	hsv(14, 88%, 13%)
CMYK	cmyk(0%, 66.7%, 87.9%, 87.1%)
CIE-LAB	lab(5.16, 9.25, 6.26)
CIE-LCH	lch(5.16, 11.16, 34.09°)
OKLab	oklab(18.29% 0.031 0.0272)
OKLCH	oklch(18.29% 0.041 41.3)
XYZ	xyz(0.7689, 0.5715, 0.1847)
Luminance	0.0057 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210B04 #041A21

analogous

#21040C #210B04 #211A04

triadic

#210B04 #04210B #0B0421

tetradic

#210B04 #0C2104 #041A21 #1A0421

square

#210B04 #0C2104 #041A21 #1A0421

split-complementary

#210B04 #04211A #040C21

monochromatic

#1B0903 #1B0903 #210B04 #581D0B #8E2F11

Accessibility & contrast

On white

18.85

#210B04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#210B04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210B04

18.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210B04	#FFFFFF	#000000	##FFFFFF
##210B04	1.00	18.85	1.11	18.85
#FFFFFF	18.85	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#110E03

Deuteranopia (green-blind)

#161304

Tritanopia (blue-blind)

#250709

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #210b04;
/* rgb */ color: rgb(33, 11, 4);
/* oklch */ color: oklch(18.3% 0.041 41.3);

Tailwind

colors: {
  custom: {
    50: '#5c4b48',
    500: '#210b04',
    950: '#000000',
  },
}

SCSS

$custom: #210b04;
$custom-light: #5c4b48;
$custom-dark: #000000;

JSON

{
  "hex": "#210b04",
  "rgb": {
    "r": 33,
    "g": 11,
    "b": 4
  },
  "hsl": {
    "h": 14.483,
    "s": 78.378,
    "l": 7.255
  },
  "oklch": {
    "l": 0.18291,
    "c": 0.0412,
    "h": 41.3
  },
  "luminance": 0.00571
}

Semantic roles & 50–950 ramp

primary

#210B04

secondary

#1D5364

accent

#C6F533

background

#F5F4F4

surface

#E9E7E6

border

#C5C3C2

text

#040100

muted

#797777

Preview Lab

Preview with #210B04

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

Preview Lab → · Contrast checker → · Palette generator →