#210B05#210B05

#210B05 is a very dark, muted red. Relative luminance 0.006; OKLCH L 18.3% C 0.040 H 38.3°. Best body text is #FFFFFF at 18.84:1 contrast (WCAG AA passes).

Color values

HEX	#210B05
RGB	rgb(33, 11, 5)
HSL	hsl(13, 74%, 7%)
HSV	hsv(13, 85%, 13%)
CMYK	cmyk(0%, 66.7%, 84.8%, 87.1%)
CIE-LAB	lab(5.18, 9.38, 5.88)
CIE-LCH	lch(5.18, 11.07, 32.08°)
OKLab	oklab(18.32% 0.0317 0.0251)
OKLCH	oklch(18.32% 0.04 38.3)
XYZ	xyz(0.7743, 0.5737, 0.2135)
Luminance	0.0057 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210B05 #051B21

analogous

#21050D #210B05 #211905

triadic

#210B05 #05210B #0B0521

tetradic

#210B05 #0D2105 #051B21 #190521

square

#210B05 #0D2105 #051B21 #190521

split-complementary

#210B05 #052119 #050D21

monochromatic

#1B0904 #1B0904 #210B05 #561D0D #8B2E15

Accessibility & contrast

On white

18.84

#210B05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#210B05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210B05

18.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210B05	#FFFFFF	#000000	##FFFFFF
##210B05	1.00	18.84	1.11	18.84
#FFFFFF	18.84	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#110E05

Deuteranopia (green-blind)

#161305

Tritanopia (blue-blind)

#250709

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #210b05;
/* rgb */ color: rgb(33, 11, 5);
/* oklch */ color: oklch(18.3% 0.040 38.3);

Tailwind

colors: {
  custom: {
    50: '#5c4b49',
    500: '#210b05',
    950: '#000000',
  },
}

SCSS

$custom: #210b05;
$custom-light: #5c4b49;
$custom-dark: #000000;

JSON

{
  "hex": "#210b05",
  "rgb": {
    "r": 33,
    "g": 11,
    "b": 5
  },
  "hsl": {
    "h": 12.857,
    "s": 73.684,
    "l": 7.451
  },
  "oklch": {
    "l": 0.1832,
    "c": 0.04042,
    "h": 38.3
  },
  "luminance": 0.00574
}

Semantic roles & 50–950 ramp

primary

#210B05

secondary

#1F5462

accent

#C9F037

background

#F5F4F4

surface

#E9E7E6

border

#C5C3C2

text

#040100

muted

#797777

Preview Lab

Preview with #210B05

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

Preview Lab → · Contrast checker → · Palette generator →