#3F121B#3F121B

#3F121B is a dark, moderate red. Relative luminance 0.016; OKLCH L 25.9% C 0.070 H 11.4°. Best body text is #FFFFFF at 15.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F121B
RGB	rgb(63, 18, 27)
HSL	hsl(348, 56%, 16%)
HSV	hsv(348, 71%, 25%)
CMYK	cmyk(0%, 71.4%, 57.1%, 75.3%)
CIE-LAB	lab(13.04, 22.82, 5.44)
CIE-LCH	lch(13.04, 23.46, 13.41°)
OKLab	oklab(25.93% 0.0691 0.0139)
OKLCH	oklch(25.93% 0.07 11.4)
XYZ	xyz(2.4642, 1.5688, 1.2097)
Luminance	0.0157 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F121B #123F36

analogous

#3F1231 #3F121B #3F1F12

triadic

#3F121B #1B3F12 #121B3F

tetradic

#3F121B #313F12 #123F36 #1F123F

square

#3F121B #313F12 #123F36 #1F123F

split-complementary

#3F121B #123F1F #12313F

monochromatic

#18070A #18070A #3F121B #6F202F #9E2D44

Accessibility & contrast

On white

15.98

#3F121B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#3F121B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F121B

15.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F121B	#FFFFFF	#000000	##FFFFFF
##3F121B	1.00	15.98	1.31	15.98
#FFFFFF	15.98	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	15.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C1C1B

Deuteranopia (green-blind)

#28251A

Tritanopia (blue-blind)

#450B15

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #3f121b;
/* rgb */ color: rgb(63, 18, 27);
/* oklch */ color: oklch(25.9% 0.070 11.4);

Tailwind

colors: {
  custom: {
    50: '#775357',
    500: '#3f121b',
    950: '#000000',
  },
}

SCSS

$custom: #3f121b;
$custom-light: #775357;
$custom-dark: #000000;

JSON

{
  "hex": "#3f121b",
  "rgb": {
    "r": 63,
    "g": 18,
    "b": 27
  },
  "hsl": {
    "h": 348,
    "s": 55.556,
    "l": 15.882
  },
  "oklch": {
    "l": 0.25926,
    "c": 0.07047,
    "h": 11.4
  },
  "luminance": 0.01569
}

Semantic roles & 50–950 ramp

primary

#3F121B

secondary

#35786B

accent

#DFC149

background

#F7F4F5

surface

#EDE7E9

border

#C8C3C5

text

#090203

muted

#7B7878

Preview Lab

Preview with #3F121B

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

Preview Lab → · Contrast checker → · Palette generator →