#3F170F#3F170F

#3F170F is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.5% C 0.065 H 33.0°. Best body text is #FFFFFF at 15.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F170F
RGB	rgb(63, 23, 15)
HSL	hsl(10, 62%, 15%)
HSV	hsv(10, 76%, 25%)
CMYK	cmyk(0%, 63.5%, 76.2%, 75.3%)
CIE-LAB	lab(13.85, 18.88, 14.56)
CIE-LCH	lch(13.85, 23.84, 37.63°)
OKLab	oklab(26.45% 0.0544 0.0353)
OKLCH	oklch(26.45% 0.065 33)
XYZ	xyz(2.4427, 1.7044, 0.6522)
Luminance	0.0170 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F170F #0F373F

analogous

#3F0F1F #3F170F #3F2F0F

triadic

#3F170F #0F3F17 #170F3F

tetradic

#3F170F #1F3F0F #0F373F #2F0F3F

square

#3F170F #1F3F0F #0F373F #2F0F3F

split-complementary

#3F170F #0F3F2F #0F1F3F

monochromatic

#190906 #190906 #3F170F #70291B #A23B27

Accessibility & contrast

On white

15.66

#3F170F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#3F170F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F170F

15.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F170F	#FFFFFF	#000000	##FFFFFF
##3F170F	1.00	15.66	1.34	15.66
#FFFFFF	15.66	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#221E0E

Deuteranopia (green-blind)

#2B270E

Tritanopia (blue-blind)

#460F15

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #3f170f;
/* rgb */ color: rgb(63, 23, 15);
/* oklch */ color: oklch(26.5% 0.065 33.0);

Tailwind

colors: {
  custom: {
    50: '#78554e',
    500: '#3f170f',
    950: '#000000',
  },
}

SCSS

$custom: #3f170f;
$custom-light: #78554e;
$custom-dark: #000000;

JSON

{
  "hex": "#3f170f",
  "rgb": {
    "r": 63,
    "g": 23,
    "b": 15
  },
  "hsl": {
    "h": 10,
    "s": 61.538,
    "l": 15.294
  },
  "oklch": {
    "l": 0.26451,
    "c": 0.06484,
    "h": 33
  },
  "luminance": 0.01704
}

Semantic roles & 50–950 ramp

primary

#3F170F

secondary

#306D79

accent

#CAE543

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #3F170F

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

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