#3F171A#3F171A

#3F171A is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.7% C 0.063 H 17.8°. Best body text is #FFFFFF at 15.57:1 contrast (WCAG AA passes).

Color values

HEX	#3F171A
RGB	rgb(63, 23, 26)
HSL	hsl(356, 47%, 17%)
HSV	hsv(356, 63%, 25%)
CMYK	cmyk(0%, 63.5%, 58.7%, 75.3%)
CIE-LAB	lab(14.08, 19.87, 7.61)
CIE-LCH	lch(14.08, 21.28, 20.96°)
OKLab	oklab(26.7% 0.0597 0.0191)
OKLCH	oklch(26.7% 0.063 17.8)
XYZ	xyz(2.5429, 1.7444, 1.1799)
Luminance	0.0174 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F171A #173F3C

analogous

#3F172E #3F171A #3F2817

triadic

#3F171A #1A3F17 #171A3F

tetradic

#3F171A #2E3F17 #173F3C #28173F

square

#3F171A #2E3F17 #173F3C #28173F

split-complementary

#3F171A #173F28 #172E3F

monochromatic

#160809 #160809 #3F171A #6C272D #99383F

Accessibility & contrast

On white

15.57

#3F171A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#3F171A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F171A

15.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F171A	#FFFFFF	#000000	##FFFFFF
##3F171A	1.00	15.57	1.35	15.57
#FFFFFF	15.57	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201F1A

Deuteranopia (green-blind)

#2A2719

Tritanopia (blue-blind)

#451118

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #3f171a;
/* rgb */ color: rgb(63, 23, 26);
/* oklch */ color: oklch(26.7% 0.063 17.8);

Tailwind

colors: {
  custom: {
    50: '#775656',
    500: '#3f171a',
    950: '#000000',
  },
}

SCSS

$custom: #3f171a;
$custom-light: #775656;
$custom-dark: #000000;

JSON

{
  "hex": "#3f171a",
  "rgb": {
    "r": 63,
    "g": 23,
    "b": 26
  },
  "hsl": {
    "h": 355.5,
    "s": 46.512,
    "l": 16.863
  },
  "oklch": {
    "l": 0.26702,
    "c": 0.06265,
    "h": 17.8
  },
  "luminance": 0.01744
}

Semantic roles & 50–950 ramp

primary

#3F171A

secondary

#3C7672

accent

#D6CC52

background

#F7F5F5

surface

#EDE9E9

border

#C8C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #3F171A

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

Preview Lab → · Contrast checker → · Palette generator →