#39100B#39100B

#39100B is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.1% C 0.066 H 29.7°. Best body text is #FFFFFF at 16.76:1 contrast (WCAG AA passes).

Color values

HEX	#39100B
RGB	rgb(57, 16, 11)
HSL	hsl(7, 68%, 13%)
HSV	hsv(7, 81%, 22%)
CMYK	cmyk(0%, 71.9%, 80.7%, 77.6%)
CIE-LAB	lab(11.03, 19.99, 12.45)
CIE-LCH	lch(11.03, 23.55, 31.92°)
OKLab	oklab(24.06% 0.0577 0.0329)
OKLCH	oklch(24.06% 0.066 29.7)
XYZ	xyz(1.9332, 1.2649, 0.4589)
Luminance	0.0126 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#39100B #0B3439

analogous

#390B1D #39100B #39270B

triadic

#39100B #0B3910 #100B39

tetradic

#39100B #1D390B #0B3439 #270B39

square

#39100B #1D390B #0B3439 #270B39

split-complementary

#39100B #0B3927 #0B1D39

monochromatic

#1A0705 #1A0705 #39100B #6C1E15 #A02D1F

Accessibility & contrast

On white

16.76

#39100B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#39100B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #39100B

16.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##39100B	#FFFFFF	#000000	##FFFFFF
##39100B	1.00	16.76	1.25	16.76
#FFFFFF	16.76	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B180A

Deuteranopia (green-blind)

#25210A

Tritanopia (blue-blind)

#3F070F

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #39100b;
/* rgb */ color: rgb(57, 16, 11);
/* oklch */ color: oklch(24.1% 0.066 29.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#39100b",
  "rgb": {
    "r": 57,
    "g": 16,
    "b": 11
  },
  "hsl": {
    "h": 6.522,
    "s": 67.647,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24063,
    "c": 0.06646,
    "h": 29.7
  },
  "luminance": 0.01265
}

Semantic roles & 50–950 ramp

primary

#39100B

secondary

#2A6E76

accent

#D8EB3D

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090201

muted

#7B7877

Preview Lab

Preview with #39100B

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

Preview Lab → · Contrast checker → · Palette generator →