#39100A#39100A

#39100A is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.0% C 0.067 H 30.8°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#39100A
RGB	rgb(57, 16, 10)
HSL	hsl(8, 70%, 13%)
HSV	hsv(8, 82%, 22%)
CMYK	cmyk(0%, 71.9%, 82.5%, 77.6%)
CIE-LAB	lab(11.01, 19.92, 12.84)
CIE-LCH	lch(11.01, 23.71, 32.81°)
OKLab	oklab(24.05% 0.0573 0.0342)
OKLCH	oklch(24.05% 0.067 30.8)
XYZ	xyz(1.9276, 1.2626, 0.4293)
Luminance	0.0126 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#39100A #0A3339

analogous

#390A1B #39100A #39270A

triadic

#39100A #0A3910 #100A39

tetradic

#39100A #1B390A #0A3339 #270A39

square

#39100A #1B390A #0A3339 #270A39

split-complementary

#39100A #0A3927 #0A1B39

monochromatic

#1A0705 #1A0705 #39100A #6D1F13 #A12D1C

Accessibility & contrast

On white

16.77

#39100A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#39100A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #39100A

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##39100A	#FFFFFF	#000000	##FFFFFF
##39100A	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1809

Deuteranopia (green-blind)

#252109

Tritanopia (blue-blind)

#3F070F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #39100a;
/* rgb */ color: rgb(57, 16, 10);
/* oklch */ color: oklch(24.0% 0.067 30.8);

Tailwind

colors: {
  custom: {
    50: '#73504b',
    500: '#39100a',
    950: '#000000',
  },
}

SCSS

$custom: #39100a;
$custom-light: #73504b;
$custom-dark: #000000;

JSON

{
  "hex": "#39100a",
  "rgb": {
    "r": 57,
    "g": 16,
    "b": 10
  },
  "hsl": {
    "h": 7.66,
    "s": 70.149,
    "l": 13.137
  },
  "oklch": {
    "l": 0.24045,
    "c": 0.06672,
    "h": 30.8
  },
  "luminance": 0.01262
}

Semantic roles & 50–950 ramp

primary

#39100A

secondary

#286C76

accent

#D6ED3B

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090201

muted

#7B7877

Preview Lab

Preview with #39100A

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

Preview Lab → · Contrast checker → · Palette generator →