#2A100B#2A100B

#2A100B is a very dark, muted red. Relative luminance 0.009; OKLCH L 21.2% C 0.045 H 32.3°. Best body text is #FFFFFF at 17.84:1 contrast (WCAG AA passes).

Color values

HEX	#2A100B
RGB	rgb(42, 16, 11)
HSL	hsl(10, 58%, 10%)
HSV	hsv(10, 74%, 16%)
CMYK	cmyk(0%, 61.9%, 73.8%, 83.5%)
CIE-LAB	lab(8.01, 12.94, 7.74)
CIE-LCH	lch(8.01, 15.08, 30.90°)
OKLab	oklab(21.19% 0.0378 0.0239)
OKLCH	oklch(21.19% 0.045 32.3)
XYZ	xyz(1.2006, 0.8871, 0.4245)
Luminance	0.0089 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A100B #0B252A

analogous

#2A0B15 #2A100B #2A1F0B

triadic

#2A100B #0B2A10 #100B2A

tetradic

#2A100B #152A0B #0B252A #1F0B2A

square

#2A100B #152A0B #0B252A #1F0B2A

split-complementary

#2A100B #0B2A1F #0B152A

monochromatic

#180906 #180906 #2A100B #5A2218 #8B3524

Accessibility & contrast

On white

17.84

#2A100B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#2A100B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A100B

17.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A100B	#FFFFFF	#000000	##FFFFFF
##2A100B	1.00	17.84	1.18	17.84
#FFFFFF	17.84	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17140A

Deuteranopia (green-blind)

#1D1A0B

Tritanopia (blue-blind)

#2F0B0F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #2a100b;
/* rgb */ color: rgb(42, 16, 11);
/* oklch */ color: oklch(21.2% 0.045 32.3);

Tailwind

colors: {
  custom: {
    50: '#654e4b',
    500: '#2a100b',
    950: '#000000',
  },
}

SCSS

$custom: #2a100b;
$custom-light: #654e4b;
$custom-dark: #000000;

JSON

{
  "hex": "#2a100b",
  "rgb": {
    "r": 42,
    "g": 16,
    "b": 11
  },
  "hsl": {
    "h": 9.677,
    "s": 58.491,
    "l": 10.392
  },
  "oklch": {
    "l": 0.21191,
    "c": 0.04471,
    "h": 32.3
  },
  "luminance": 0.00887
}

Semantic roles & 50–950 ramp

primary

#2A100B

secondary

#2B5C66

accent

#C9E246

background

#F6F4F4

surface

#EBE7E7

border

#C6C3C3

text

#060101

muted

#7A7777

Preview Lab

Preview with #2A100B

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

Preview Lab → · Contrast checker → · Palette generator →