#210F0B#210F0B

#210F0B is a very dark, muted red. Relative luminance 0.007; OKLCH L 19.4% C 0.032 H 33.4°. Best body text is #FFFFFF at 18.46:1 contrast (WCAG AA passes).

Color values

HEX	#210F0B
RGB	rgb(33, 15, 11)
HSL	hsl(11, 50%, 9%)
HSV	hsv(11, 67%, 13%)
CMYK	cmyk(0%, 54.5%, 66.7%, 87.1%)
CIE-LAB	lab(6.23, 8.33, 4.95)
CIE-LCH	lch(6.23, 9.69, 30.72°)
OKLab	oklab(19.37% 0.0266 0.0176)
OKLCH	oklch(19.37% 0.032 33.4)
XYZ	xyz(0.8585, 0.6892, 0.4044)
Luminance	0.0069 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210F0B #0B1D21

analogous

#210B12 #210F0B #211A0B

triadic

#210F0B #0B210F #0F0B21

tetradic

#210F0B #12210B #0B1D21 #1A0B21

square

#210F0B #12210B #0B1D21 #1A0B21

split-complementary

#210F0B #0B211A #0B1221

monochromatic

#170A08 #170A08 #210F0B #4F241A #7D392A

Accessibility & contrast

On white

18.46

#210F0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#210F0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210F0B

18.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210F0B	#FFFFFF	#000000	##FFFFFF
##210F0B	1.00	18.46	1.14	18.46
#FFFFFF	18.46	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13120B

Deuteranopia (green-blind)

#18150B

Tritanopia (blue-blind)

#250C0E

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #210f0b;
/* rgb */ color: rgb(33, 15, 11);
/* oklch */ color: oklch(19.4% 0.032 33.4);

Tailwind

colors: {
  custom: {
    50: '#5c4d4c',
    500: '#210f0b',
    950: '#000000',
  },
}

SCSS

$custom: #210f0b;
$custom-light: #5c4d4c;
$custom-dark: #000000;

JSON

{
  "hex": "#210f0b",
  "rgb": {
    "r": 33,
    "g": 15,
    "b": 11
  },
  "hsl": {
    "h": 10.909,
    "s": 50,
    "l": 8.627
  },
  "oklch": {
    "l": 0.1937,
    "c": 0.03188,
    "h": 33.4
  },
  "luminance": 0.00689
}

Semantic roles & 50–950 ramp

primary

#210F0B

secondary

#2C535C

accent

#C0DA4E

background

#F5F4F4

surface

#E9E7E7

border

#C5C3C3

text

#040101

muted

#797777

Preview Lab

Preview with #210F0B

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

Preview Lab → · Contrast checker → · Palette generator →