#3F170C#3F170C

#3F170C is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.4% C 0.066 H 36.3°. Best body text is #FFFFFF at 15.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F170C
RGB	rgb(63, 23, 12)
HSL	hsl(13, 68%, 15%)
HSV	hsv(13, 81%, 25%)
CMYK	cmyk(0%, 63.5%, 81%, 75.3%)
CIE-LAB	lab(13.81, 18.68, 15.97)
CIE-LCH	lch(13.81, 24.58, 40.53°)
OKLab	oklab(26.4% 0.0531 0.039)
OKLCH	oklch(26.4% 0.066 36.3)
XYZ	xyz(2.4229, 1.6964, 0.5476)
Luminance	0.0170 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F170C #0C343F

analogous

#3F0C1B #3F170C #3F310C

triadic

#3F170C #0C3F17 #170C3F

tetradic

#3F170C #1B3F0C #0C343F #310C3F

square

#3F170C #1B3F0C #0C343F #310C3F

split-complementary

#3F170C #0C3F31 #0C1B3F

monochromatic

#1A0905 #1A0905 #3F170C #722A16 #A63D20

Accessibility & contrast

On white

15.68

#3F170C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#3F170C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F170C

15.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F170C	#FFFFFF	#000000	##FFFFFF
##3F170C	1.00	15.68	1.34	15.68
#FFFFFF	15.68	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#221E0B

Deuteranopia (green-blind)

#2C270B

Tritanopia (blue-blind)

#460F15

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #3f170c;
/* rgb */ color: rgb(63, 23, 12);
/* oklch */ color: oklch(26.4% 0.066 36.3);

Tailwind

colors: {
  custom: {
    50: '#78554c',
    500: '#3f170c',
    950: '#000000',
  },
}

SCSS

$custom: #3f170c;
$custom-light: #78554c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f170c",
  "rgb": {
    "r": 63,
    "g": 23,
    "b": 12
  },
  "hsl": {
    "h": 12.941,
    "s": 68,
    "l": 14.706
  },
  "oklch": {
    "l": 0.26401,
    "c": 0.06587,
    "h": 36.3
  },
  "luminance": 0.01696
}

Semantic roles & 50–950 ramp

primary

#3F170C

secondary

#2C6A7B

accent

#C5EB3D

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #3F170C

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

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