#2B0101#2B0101

#2B0101 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.4% C 0.072 H 28.3°. Best body text is #FFFFFF at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#2B0101
RGB	rgb(43, 1, 1)
HSL	hsl(0, 95%, 9%)
HSV	hsv(0, 98%, 17%)
CMYK	cmyk(0%, 97.7%, 97.7%, 83.1%)
CIE-LAB	lab(4.86, 20.12, 7.24)
CIE-LCH	lch(4.86, 21.39, 19.79°)
OKLab	oklab(18.39% 0.0635 0.0342)
OKLCH	oklch(18.39% 0.072 28.3)
XYZ	xyz(1.0127, 0.5377, 0.0792)
Luminance	0.0054 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B0101 #012B2B

analogous

#2B0116 #2B0101 #2B1601

triadic

#2B0101 #012B01 #01012B

tetradic

#2B0101 #162B01 #012B2B #16012B

square

#2B0101 #162B01 #012B2B #16012B

split-complementary

#2B0101 #012B16 #01162B

monochromatic

#1E0101 #1E0101 #2B0101 #670202 #A30404

Accessibility & contrast

On white

18.96

#2B0101 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#2B0101 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B0101

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B0101	#FFFFFF	#000000	##FFFFFF
##2B0101	1.00	18.96	1.11	18.96
#FFFFFF	18.96	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D0A01

Deuteranopia (green-blind)

#181400

Tritanopia (blue-blind)

#310001

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #2b0101;
/* rgb */ color: rgb(43, 1, 1);
/* oklch */ color: oklch(18.4% 0.072 28.3);

Tailwind

colors: {
  custom: {
    50: '#674647',
    500: '#2b0101',
    950: '#000000',
  },
}

SCSS

$custom: #2b0101;
$custom-light: #674647;
$custom-dark: #000000;

JSON

{
  "hex": "#2b0101",
  "rgb": {
    "r": 43,
    "g": 1,
    "b": 1
  },
  "hsl": {
    "h": 0,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.18387,
    "c": 0.07212,
    "h": 28.3
  },
  "luminance": 0.00537
}

Semantic roles & 50–950 ramp

primary

#2B0101

secondary

#177171

accent

#FFFF29

background

#F6F3F3

surface

#EBE5E5

border

#C6C1C1

text

#060000

muted

#7A7677

Preview Lab

Preview with #2B0101

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

Preview Lab → · Contrast checker → · Palette generator →