#3F181E#3F181E

#3F181E is a dark, moderate red. Relative luminance 0.018; OKLCH L 27.0% C 0.061 H 12.6°. Best body text is #FFFFFF at 15.43:1 contrast (WCAG AA passes).

Color values

HEX	#3F181E
RGB	rgb(63, 24, 30)
HSL	hsl(351, 45%, 17%)
HSV	hsv(351, 62%, 25%)
CMYK	cmyk(0%, 61.9%, 52.4%, 75.3%)
CIE-LAB	lab(14.42, 19.73, 5.17)
CIE-LCH	lch(14.42, 20.40, 14.68°)
OKLab	oklab(26.99% 0.0597 0.0133)
OKLCH	oklch(26.99% 0.061 12.6)
XYZ	xyz(2.6111, 1.8041, 1.4388)
Luminance	0.0180 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F181E #183F39

analogous

#3F1832 #3F181E #3F2618

triadic

#3F181E #1E3F18 #181E3F

tetradic

#3F181E #323F18 #183F39 #26183F

square

#3F181E #323F18 #183F39 #26183F

split-complementary

#3F181E #183F26 #18323F

monochromatic

#16080B #16080B #3F181E #6B2933 #983A48

Accessibility & contrast

On white

15.43

#3F181E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#3F181E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F181E

15.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F181E	#FFFFFF	#000000	##FFFFFF
##3F181E	1.00	15.43	1.36	15.43
#FFFFFF	15.43	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20201E

Deuteranopia (green-blind)

#2A271D

Tritanopia (blue-blind)

#45131A

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #3f181e;
/* rgb */ color: rgb(63, 24, 30);
/* oklch */ color: oklch(27.0% 0.061 12.6);

Tailwind

colors: {
  custom: {
    50: '#775659',
    500: '#3f181e',
    950: '#000000',
  },
}

SCSS

$custom: #3f181e;
$custom-light: #775659;
$custom-dark: #000000;

JSON

{
  "hex": "#3f181e",
  "rgb": {
    "r": 63,
    "g": 24,
    "b": 30
  },
  "hsl": {
    "h": 350.769,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.26993,
    "c": 0.06118,
    "h": 12.6
  },
  "luminance": 0.01804
}

Semantic roles & 50–950 ramp

primary

#3F181E

secondary

#3D756D

accent

#D5C153

background

#F7F5F5

surface

#EDE9E9

border

#C8C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #3F181E

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

Preview Lab → · Contrast checker → · Palette generator →