#3B0310#3B0310

#3B0310 is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.9% C 0.085 H 13.9°. Best body text is #FFFFFF at 17.41:1 contrast (WCAG AA passes).

Color values

HEX	#3B0310
RGB	rgb(59, 3, 16)
HSL	hsl(346, 90%, 12%)
HSV	hsv(346, 95%, 23%)
CMYK	cmyk(0%, 94.9%, 72.9%, 76.9%)
CIE-LAB	lab(9.26, 27.53, 7.56)
CIE-LCH	lch(9.26, 28.55, 15.35°)
OKLab	oklab(22.86% 0.0827 0.0205)
OKLCH	oklch(22.86% 0.085 13.9)
XYZ	xyz(1.9299, 1.0326, 0.5878)
Luminance	0.0103 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B0310 #033B2E

analogous

#3B032C #3B0310 #3B1203

triadic

#3B0310 #103B03 #03103B

tetradic

#3B0310 #2C3B03 #033B2E #12033B

square

#3B0310 #2C3B03 #033B2E #12033B

split-complementary

#3B0310 #033B12 #032C3B

monochromatic

#1D0108 #1D0108 #3B0310 #750620 #AF0930

Accessibility & contrast

On white

17.41

#3B0310 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#3B0310 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B0310

17.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B0310	#FFFFFF	#000000	##FFFFFF
##3B0310	1.00	17.41	1.21	17.41
#FFFFFF	17.41	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131210

Deuteranopia (green-blind)

#221E0E

Tritanopia (blue-blind)

#420008

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #3b0310;
/* rgb */ color: rgb(59, 3, 16);
/* oklch */ color: oklch(22.9% 0.085 13.9);

Tailwind

colors: {
  custom: {
    50: '#764a4e',
    500: '#3b0310',
    950: '#000000',
  },
}

SCSS

$custom: #3b0310;
$custom-light: #764a4e;
$custom-dark: #000000;

JSON

{
  "hex": "#3b0310",
  "rgb": {
    "r": 59,
    "g": 3,
    "b": 16
  },
  "hsl": {
    "h": 346.071,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.22862,
    "c": 0.08519,
    "h": 13.9
  },
  "luminance": 0.01032
}

Semantic roles & 50–950 ramp

primary

#3B0310

secondary

#1C7E67

accent

#FFCD29

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #3B0310

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

Preview Lab → · Contrast checker → · Palette generator →