#2B100D#2B100D

#2B100D is a very dark, muted red. Relative luminance 0.009; OKLCH L 21.4% C 0.046 H 28.0°. Best body text is #FFFFFF at 17.76:1 contrast (WCAG AA passes).

Color values

HEX	#2B100D
RGB	rgb(43, 16, 13)
HSL	hsl(6, 54%, 11%)
HSV	hsv(6, 70%, 17%)
CMYK	cmyk(0%, 62.8%, 69.8%, 83.1%)
CIE-LAB	lab(8.25, 13.64, 7.20)
CIE-LCH	lch(8.25, 15.42, 27.83°)
OKLab	oklab(21.42% 0.0403 0.0214)
OKLCH	oklch(21.42% 0.046 28)
XYZ	xyz(1.2543, 0.9134, 0.4909)
Luminance	0.0091 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B100D #0D282B

analogous

#2B0D19 #2B100D #2B1F0D

triadic

#2B100D #0D2B10 #100D2B

tetradic

#2B100D #192B0D #0D282B #1F0D2B

square

#2B100D #192B0D #0D282B #1F0D2B

split-complementary

#2B100D #0D2B1F #0D192B

monochromatic

#170907 #170907 #2B100D #5A211B #893329

Accessibility & contrast

On white

17.76

#2B100D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#2B100D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B100D

17.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B100D	#FFFFFF	#000000	##FFFFFF
##2B100D	1.00	17.76	1.18	17.76
#FFFFFF	17.76	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17140D

Deuteranopia (green-blind)

#1D1A0C

Tritanopia (blue-blind)

#300C0F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #2b100d;
/* rgb */ color: rgb(43, 16, 13);
/* oklch */ color: oklch(21.4% 0.046 28.0);

Tailwind

colors: {
  custom: {
    50: '#664f4c',
    500: '#2b100d',
    950: '#000000',
  },
}

SCSS

$custom: #2b100d;
$custom-light: #664f4c;
$custom-dark: #000000;

JSON

{
  "hex": "#2b100d",
  "rgb": {
    "r": 43,
    "g": 16,
    "b": 13
  },
  "hsl": {
    "h": 6,
    "s": 53.571,
    "l": 10.98
  },
  "oklch": {
    "l": 0.21423,
    "c": 0.04559,
    "h": 28
  },
  "luminance": 0.00913
}

Semantic roles & 50–950 ramp

primary

#2B100D

secondary

#2E6066

accent

#CEDD4B

background

#F6F4F4

surface

#EBE7E7

border

#C6C3C3

text

#060101

muted

#7A7777

Preview Lab

Preview with #2B100D

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

Preview Lab → · Contrast checker → · Palette generator →