#2B010A#2B010A

#2B010A is a very dark, moderate red. Relative luminance 0.006; OKLCH L 18.6% C 0.071 H 12.4°. Best body text is #FFFFFF at 18.90:1 contrast (WCAG AA passes).

Color values

HEX	#2B010A
RGB	rgb(43, 1, 10)
HSL	hsl(347, 95%, 9%)
HSV	hsv(347, 98%, 17%)
CMYK	cmyk(0%, 97.7%, 76.7%, 83.1%)
CIE-LAB	lab(5.03, 21.11, 3.83)
CIE-LCH	lch(5.03, 21.46, 10.30°)
OKLab	oklab(18.65% 0.0698 0.0153)
OKLCH	oklch(18.65% 0.071 12.4)
XYZ	xyz(1.0620, 0.5574, 0.3388)
Luminance	0.0056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B010A #012B22

analogous

#2B011F #2B010A #2B0D01

triadic

#2B010A #0A2B01 #010A2B

tetradic

#2B010A #1F2B01 #012B22 #0D012B

square

#2B010A #1F2B01 #012B22 #0D012B

split-complementary

#2B010A #012B0D #011F2B

monochromatic

#1E0107 #1E0107 #2B010A #670218 #A30426

Accessibility & contrast

On white

18.90

#2B010A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#2B010A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B010A

18.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B010A	#FFFFFF	#000000	##FFFFFF
##2B010A	1.00	18.90	1.11	18.90
#FFFFFF	18.90	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0B0A

Deuteranopia (green-blind)

#171409

Tritanopia (blue-blind)

#300004

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #2b010a;
/* rgb */ color: rgb(43, 1, 10);
/* oklch */ color: oklch(18.6% 0.071 12.4);

Tailwind

colors: {
  custom: {
    50: '#67464b',
    500: '#2b010a',
    950: '#000000',
  },
}

SCSS

$custom: #2b010a;
$custom-light: #67464b;
$custom-dark: #000000;

JSON

{
  "hex": "#2b010a",
  "rgb": {
    "r": 43,
    "g": 1,
    "b": 10
  },
  "hsl": {
    "h": 347.143,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.18647,
    "c": 0.07141,
    "h": 12.4
  },
  "luminance": 0.00557
}

Semantic roles & 50–950 ramp

primary

#2B010A

secondary

#17715E

accent

#FFD129

background

#F6F4F4

surface

#EBE6E7

border

#C6C2C3

text

#060001

muted

#7A7777

Preview Lab

Preview with #2B010A

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

Preview Lab → · Contrast checker → · Palette generator →