#3F040E#3F040E

#3F040E is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.8% C 0.088 H 18.1°. Best body text is #FFFFFF at 17.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F040E
RGB	rgb(63, 4, 14)
HSL	hsl(350, 88%, 13%)
HSV	hsv(350, 94%, 25%)
CMYK	cmyk(0%, 93.7%, 77.8%, 75.3%)
CIE-LAB	lab(10.38, 28.21, 10.34)
CIE-LCH	lch(10.38, 30.05, 20.13°)
OKLab	oklab(23.84% 0.0837 0.0273)
OKLCH	oklch(23.84% 0.088 18.1)
XYZ	xyz(2.1728, 1.1756, 0.5279)
Luminance	0.0118 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F040E #043F35

analogous

#3F042B #3F040E #3F1704

triadic

#3F040E #0E3F04 #040E3F

tetradic

#3F040E #2B3F04 #043F35 #17043F

square

#3F040E #2B3F04 #043F35 #17043F

split-complementary

#3F040E #043F17 #042B3F

monochromatic

#1D0206 #1D0206 #3F040E #79081B #B20B28

Accessibility & contrast

On white

17.00

#3F040E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#3F040E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F040E

17.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F040E	#FFFFFF	#000000	##FFFFFF
##3F040E	1.00	17.00	1.23	17.00
#FFFFFF	17.00	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16140E

Deuteranopia (green-blind)

#25210C

Tritanopia (blue-blind)

#460008

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #3f040e;
/* rgb */ color: rgb(63, 4, 14);
/* oklch */ color: oklch(23.8% 0.088 18.1);

Tailwind

colors: {
  custom: {
    50: '#794b4d',
    500: '#3f040e',
    950: '#000000',
  },
}

SCSS

$custom: #3f040e;
$custom-light: #794b4d;
$custom-dark: #000000;

JSON

{
  "hex": "#3f040e",
  "rgb": {
    "r": 63,
    "g": 4,
    "b": 14
  },
  "hsl": {
    "h": 349.831,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.23844,
    "c": 0.08801,
    "h": 18.1
  },
  "luminance": 0.01175
}

Semantic roles & 50–950 ramp

primary

#3F040E

secondary

#1E8070

accent

#FEDA2A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #3F040E

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

Preview Lab → · Contrast checker → · Palette generator →