#3F180D#3F180D

#3F180D is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.6% C 0.064 H 36.6°. Best body text is #FFFFFF at 15.58:1 contrast (WCAG AA passes).

Color values

HEX	#3F180D
RGB	rgb(63, 24, 13)
HSL	hsl(13, 66%, 15%)
HSV	hsv(13, 79%, 25%)
CMYK	cmyk(0%, 61.9%, 79.4%, 75.3%)
CIE-LAB	lab(14.06, 18.14, 15.83)
CIE-LCH	lch(14.06, 24.08, 41.12°)
OKLab	oklab(26.6% 0.0517 0.0384)
OKLCH	oklch(26.6% 0.064 36.6)
XYZ	xyz(2.4494, 1.7394, 0.5874)
Luminance	0.0174 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F180D #0D343F

analogous

#3F0D1B #3F180D #3F310D

triadic

#3F180D #0D3F18 #180D3F

tetradic

#3F180D #1B3F0D #0D343F #310D3F

square

#3F180D #1B3F0D #0D343F #310D3F

split-complementary

#3F180D #0D3F31 #0D1B3F

monochromatic

#190A05 #190A05 #3F180D #722B17 #A43F22

Accessibility & contrast

On white

15.58

#3F180D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#3F180D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F180D

15.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F180D	#FFFFFF	#000000	##FFFFFF
##3F180D	1.00	15.58	1.35	15.58
#FFFFFF	15.58	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#221E0C

Deuteranopia (green-blind)

#2C270C

Tritanopia (blue-blind)

#461016

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #3f180d;
/* rgb */ color: rgb(63, 24, 13);
/* oklch */ color: oklch(26.6% 0.064 36.6);

Tailwind

colors: {
  custom: {
    50: '#78564c',
    500: '#3f180d',
    950: '#000000',
  },
}

SCSS

$custom: #3f180d;
$custom-light: #78564c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f180d",
  "rgb": {
    "r": 63,
    "g": 24,
    "b": 13
  },
  "hsl": {
    "h": 13.2,
    "s": 65.789,
    "l": 14.902
  },
  "oklch": {
    "l": 0.26595,
    "c": 0.06436,
    "h": 36.6
  },
  "luminance": 0.01739
}

Semantic roles & 50–950 ramp

primary

#3F180D

secondary

#2D6A7B

accent

#C3E93F

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #3F180D

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

Preview Lab → · Contrast checker → · Palette generator →