#3A100A#3A100A

#3A100A is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.2% C 0.068 H 30.7°. Best body text is #FFFFFF at 16.69:1 contrast (WCAG AA passes).

Color values

HEX	#3A100A
RGB	rgb(58, 16, 10)
HSL	hsl(8, 71%, 13%)
HSV	hsv(8, 83%, 23%)
CMYK	cmyk(0%, 72.4%, 82.8%, 77.3%)
CIE-LAB	lab(11.22, 20.36, 13.17)
CIE-LCH	lch(11.22, 24.25, 32.89°)
OKLab	oklab(24.24% 0.0585 0.0348)
OKLCH	oklch(24.24% 0.068 30.7)
XYZ	xyz(1.9852, 1.2923, 0.4320)
Luminance	0.0129 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A100A #0A343A

analogous

#3A0A1C #3A100A #3A280A

triadic

#3A100A #0A3A10 #100A3A

tetradic

#3A100A #1C3A0A #0A343A #280A3A

square

#3A100A #1C3A0A #0A343A #280A3A

split-complementary

#3A100A #0A3A28 #0A1C3A

monochromatic

#1A0705 #1A0705 #3A100A #6E1E13 #A22D1C

Accessibility & contrast

On white

16.69

#3A100A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#3A100A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A100A

16.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A100A	#FFFFFF	#000000	##FFFFFF
##3A100A	1.00	16.69	1.26	16.69
#FFFFFF	16.69	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1809

Deuteranopia (green-blind)

#262109

Tritanopia (blue-blind)

#41060F

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3a100a;
/* rgb */ color: rgb(58, 16, 10);
/* oklch */ color: oklch(24.2% 0.068 30.7);

Tailwind

colors: {
  custom: {
    50: '#74504b',
    500: '#3a100a',
    950: '#000000',
  },
}

SCSS

$custom: #3a100a;
$custom-light: #74504b;
$custom-dark: #000000;

JSON

{
  "hex": "#3a100a",
  "rgb": {
    "r": 58,
    "g": 16,
    "b": 10
  },
  "hsl": {
    "h": 7.5,
    "s": 70.588,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24244,
    "c": 0.06808,
    "h": 30.7
  },
  "luminance": 0.01292
}

Semantic roles & 50–950 ramp

primary

#3A100A

secondary

#286E77

accent

#D7ED3A

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090201

muted

#7B7877

Preview Lab

Preview with #3A100A

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

Preview Lab → · Contrast checker → · Palette generator →