#2B100B#2B100B

#2B100B is a very dark, muted red. Relative luminance 0.009; OKLCH L 21.4% C 0.046 H 31.9°. Best body text is #FFFFFF at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#2B100B
RGB	rgb(43, 16, 11)
HSL	hsl(9, 59%, 11%)
HSV	hsv(9, 74%, 17%)
CMYK	cmyk(0%, 62.8%, 74.4%, 83.1%)
CIE-LAB	lab(8.20, 13.44, 8.05)
CIE-LCH	lch(8.20, 15.67, 30.90°)
OKLab	oklab(21.38% 0.0392 0.0245)
OKLCH	oklch(21.38% 0.046 31.9)
XYZ	xyz(1.2421, 0.9085, 0.4265)
Luminance	0.0091 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B100B #0B262B

analogous

#2B0B16 #2B100B #2B200B

triadic

#2B100B #0B2B10 #100B2B

tetradic

#2B100B #162B0B #0B262B #200B2B

square

#2B100B #162B0B #0B262B #200B2B

split-complementary

#2B100B #0B2B20 #0B162B

monochromatic

#180906 #180906 #2B100B #5C2217 #8C3424

Accessibility & contrast

On white

17.77

#2B100B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#2B100B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B100B

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B100B	#FFFFFF	#000000	##FFFFFF
##2B100B	1.00	17.77	1.18	17.77
#FFFFFF	17.77	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17140A

Deuteranopia (green-blind)

#1D1A0A

Tritanopia (blue-blind)

#300B0F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #2b100b;
/* rgb */ color: rgb(43, 16, 11);
/* oklch */ color: oklch(21.4% 0.046 31.9);

Tailwind

colors: {
  custom: {
    50: '#664f4b',
    500: '#2b100b',
    950: '#000000',
  },
}

SCSS

$custom: #2b100b;
$custom-light: #664f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#2b100b",
  "rgb": {
    "r": 43,
    "g": 16,
    "b": 11
  },
  "hsl": {
    "h": 9.375,
    "s": 59.259,
    "l": 10.588
  },
  "oklch": {
    "l": 0.21376,
    "c": 0.04624,
    "h": 31.9
  },
  "luminance": 0.00908
}

Semantic roles & 50–950 ramp

primary

#2B100B

secondary

#2B5E67

accent

#CAE245

background

#F6F4F4

surface

#EBE7E7

border

#C6C3C3

text

#060101

muted

#7A7777

Preview Lab

Preview with #2B100B

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

Preview Lab → · Contrast checker → · Palette generator →