#2B010B#2B010B

#2B010B is a very dark, moderate red. Relative luminance 0.006; OKLCH L 18.7% C 0.072 H 10.9°. Best body text is #FFFFFF at 18.89:1 contrast (WCAG AA passes).

Color values

HEX	#2B010B
RGB	rgb(43, 1, 11)
HSL	hsl(346, 95%, 9%)
HSV	hsv(346, 98%, 17%)
CMYK	cmyk(0%, 97.7%, 74.4%, 83.1%)
CIE-LAB	lab(5.05, 21.22, 3.45)
CIE-LCH	lch(5.05, 21.50, 9.23°)
OKLab	oklab(18.68% 0.0703 0.0136)
OKLCH	oklch(18.68% 0.072 10.9)
XYZ	xyz(1.0676, 0.5596, 0.3683)
Luminance	0.0056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B010B #012B21

analogous

#2B0120 #2B010B #2B0C01

triadic

#2B010B #0B2B01 #010B2B

tetradic

#2B010B #202B01 #012B21 #0C012B

square

#2B010B #202B01 #012B21 #0C012B

split-complementary

#2B010B #012B0C #01202B

monochromatic

#1E0108 #1E0108 #2B010B #67021A #A3042A

Accessibility & contrast

On white

18.89

#2B010B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#2B010B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B010B

18.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B010B	#FFFFFF	#000000	##FFFFFF
##2B010B	1.00	18.89	1.11	18.89
#FFFFFF	18.89	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0B0B

Deuteranopia (green-blind)

#17140A

Tritanopia (blue-blind)

#300004

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #2b010b;
/* rgb */ color: rgb(43, 1, 11);
/* oklch */ color: oklch(18.7% 0.072 10.9);

Tailwind

colors: {
  custom: {
    50: '#67464c',
    500: '#2b010b',
    950: '#000000',
  },
}

SCSS

$custom: #2b010b;
$custom-light: #67464c;
$custom-dark: #000000;

JSON

{
  "hex": "#2b010b",
  "rgb": {
    "r": 43,
    "g": 1,
    "b": 11
  },
  "hsl": {
    "h": 345.714,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.18676,
    "c": 0.07155,
    "h": 10.9
  },
  "luminance": 0.00559
}

Semantic roles & 50–950 ramp

primary

#2B010B

secondary

#17715C

accent

#FFCC29

background

#F6F4F4

surface

#EBE6E7

border

#C6C2C3

text

#060001

muted

#7A7777

Preview Lab

Preview with #2B010B

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

Preview Lab → · Contrast checker → · Palette generator →