#3F180C#3F180C

#3F180C is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.6% C 0.065 H 37.7°. Best body text is #FFFFFF at 15.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F180C
RGB	rgb(63, 24, 12)
HSL	hsl(14, 68%, 15%)
HSV	hsv(14, 81%, 25%)
CMYK	cmyk(0%, 61.9%, 81%, 75.3%)
CIE-LAB	lab(14.04, 18.07, 16.28)
CIE-LCH	lch(14.04, 24.32, 42.01°)
OKLab	oklab(26.58% 0.0512 0.0396)
OKLCH	oklch(26.58% 0.065 37.7)
XYZ	xyz(2.4431, 1.7369, 0.5544)
Luminance	0.0174 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F180C #0C333F

analogous

#3F0C19 #3F180C #3F320C

triadic

#3F180C #0C3F18 #180C3F

tetradic

#3F180C #193F0C #0C333F #320C3F

square

#3F180C #193F0C #0C333F #320C3F

split-complementary

#3F180C #0C3F32 #0C193F

monochromatic

#1A0A05 #1A0A05 #3F180C #722C16 #A63F20

Accessibility & contrast

On white

15.59

#3F180C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#3F180C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F180C

15.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F180C	#FFFFFF	#000000	##FFFFFF
##3F180C	1.00	15.59	1.35	15.59
#FFFFFF	15.59	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231E0B

Deuteranopia (green-blind)

#2C270B

Tritanopia (blue-blind)

#461015

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #3f180c;
/* rgb */ color: rgb(63, 24, 12);
/* oklch */ color: oklch(26.6% 0.065 37.7);

Tailwind

colors: {
  custom: {
    50: '#78564c',
    500: '#3f180c',
    950: '#000000',
  },
}

SCSS

$custom: #3f180c;
$custom-light: #78564c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f180c",
  "rgb": {
    "r": 63,
    "g": 24,
    "b": 12
  },
  "hsl": {
    "h": 14.118,
    "s": 68,
    "l": 14.706
  },
  "oklch": {
    "l": 0.26579,
    "c": 0.06473,
    "h": 37.7
  },
  "luminance": 0.01737
}

Semantic roles & 50–950 ramp

primary

#3F180C

secondary

#2C687B

accent

#C2EB3D

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #3F180C

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

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