#2A010B#2A010B

#2A010B is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.4% C 0.071 H 10.3°. Best body text is #FFFFFF at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#2A010B
RGB	rgb(42, 1, 11)
HSL	hsl(345, 95%, 8%)
HSV	hsv(345, 98%, 16%)
CMYK	cmyk(0%, 97.6%, 73.8%, 83.5%)
CIE-LAB	lab(4.86, 20.59, 3.14)
CIE-LCH	lch(4.86, 20.82, 8.68°)
OKLab	oklab(18.44% 0.0694 0.0126)
OKLCH	oklch(18.44% 0.071 10.3)
XYZ	xyz(1.0262, 0.5383, 0.3664)
Luminance	0.0054 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A010B #012A20

analogous

#2A011F #2A010B #2A0B01

triadic

#2A010B #0B2A01 #010B2A

tetradic

#2A010B #1F2A01 #012A20 #0B012A

square

#2A010B #1F2A01 #012A20 #0B012A

split-complementary

#2A010B #012A0B #011F2A

monochromatic

#1E0108 #1E0108 #2A010B #66021B #A2042A

Accessibility & contrast

On white

18.96

#2A010B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#2A010B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A010B

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A010B	#FFFFFF	#000000	##FFFFFF
##2A010B	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)

#0A0B0B

Deuteranopia (green-blind)

#16140A

Tritanopia (blue-blind)

#2F0004

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #2a010b;
/* rgb */ color: rgb(42, 1, 11);
/* oklch */ color: oklch(18.4% 0.071 10.3);

Tailwind

colors: {
  custom: {
    50: '#66464c',
    500: '#2a010b',
    950: '#000000',
  },
}

SCSS

$custom: #2a010b;
$custom-light: #66464c;
$custom-dark: #000000;

JSON

{
  "hex": "#2a010b",
  "rgb": {
    "r": 42,
    "g": 1,
    "b": 11
  },
  "hsl": {
    "h": 345.366,
    "s": 95.349,
    "l": 8.431
  },
  "oklch": {
    "l": 0.18435,
    "c": 0.07052,
    "h": 10.3
  },
  "luminance": 0.00538
}

Semantic roles & 50–950 ramp

primary

#2A010B

secondary

#16705A

accent

#FFCB29

background

#F6F3F4

surface

#EBE5E7

border

#C6C1C3

text

#060001

muted

#7A7677

Preview Lab

Preview with #2A010B

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

Preview Lab → · Contrast checker → · Palette generator →