#3F1003#3F1003

#3F1003 is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.1% C 0.077 H 37.1°. Best body text is #FFFFFF at 16.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F1003
RGB	rgb(63, 16, 3)
HSL	hsl(13, 91%, 13%)
HSV	hsv(13, 95%, 25%)
CMYK	cmyk(0%, 74.6%, 95.2%, 75.3%)
CIE-LAB	lab(12.18, 22.12, 17.51)
CIE-LCH	lch(12.18, 28.21, 38.36°)
OKLab	oklab(25.14% 0.0613 0.0465)
OKLCH	oklch(25.14% 0.077 37.1)
XYZ	xyz(2.2519, 1.4343, 0.2444)
Luminance	0.0143 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F1003 #03323F

analogous

#3F0314 #3F1003 #3F2E03

triadic

#3F1003 #033F10 #10033F

tetradic

#3F1003 #143F03 #03323F #2E033F

square

#3F1003 #143F03 #03323F #2E033F

split-complementary

#3F1003 #033F2E #03143F

monochromatic

#1D0701 #1D0701 #3F1003 #791F06 #B42E09

Accessibility & contrast

On white

16.32

#3F1003 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#3F1003 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F1003

16.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F1003	#FFFFFF	#000000	##FFFFFF
##3F1003	1.00	16.32	1.29	16.32
#FFFFFF	16.32	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1902

Deuteranopia (green-blind)

#292402

Tritanopia (blue-blind)

#46030D

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #3f1003;
/* rgb */ color: rgb(63, 16, 3);
/* oklch */ color: oklch(25.1% 0.077 37.1);

Tailwind

colors: {
  custom: {
    50: '#795148',
    500: '#3f1003',
    950: '#000000',
  },
}

SCSS

$custom: #3f1003;
$custom-light: #795148;
$custom-dark: #000000;

JSON

{
  "hex": "#3f1003",
  "rgb": {
    "r": 63,
    "g": 16,
    "b": 3
  },
  "hsl": {
    "h": 13,
    "s": 90.909,
    "l": 12.941
  },
  "oklch": {
    "l": 0.25136,
    "c": 0.07693,
    "h": 37.1
  },
  "luminance": 0.01434
}

Semantic roles & 50–950 ramp

primary

#3F1003

secondary

#1D6B81

accent

#D1FF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0200

muted

#7C7877

Preview Lab

Preview with #3F1003

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

Preview Lab → · Contrast checker → · Palette generator →