#4B100D#4B100D

#4B100D is a dark, moderate red. Relative luminance 0.019; OKLCH L 27.7% C 0.089 H 27.5°. Best body text is #FFFFFF at 15.23:1 contrast (WCAG AA passes).

Color values

HEX	#4B100D
RGB	rgb(75, 16, 13)
HSL	hsl(3, 70%, 17%)
HSV	hsv(3, 83%, 29%)
CMYK	cmyk(0%, 78.7%, 82.7%, 70.6%)
CIE-LAB	lab(14.93, 27.45, 17.44)
CIE-LCH	lch(14.93, 32.52, 32.44°)
OKLab	oklab(27.72% 0.0791 0.0412)
OKLCH	oklch(27.72% 0.089 27.5)
XYZ	xyz(3.1599, 1.8960, 0.5803)
Luminance	0.0190 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B100D #0D484B

analogous

#4B0D29 #4B100D #4B2F0D

triadic

#4B100D #0D4B10 #100D4B

tetradic

#4B100D #294B0D #0D484B #2F0D4B

square

#4B100D #294B0D #0D484B #2F0D4B

split-complementary

#4B100D #0D4B2F #0D294B

monochromatic

#1A0605 #1A0605 #4B100D #7F1B16 #B3261F

Accessibility & contrast

On white

15.23

#4B100D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#4B100D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B100D

15.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B100D	#FFFFFF	#000000	##FFFFFF
##4B100D	1.00	15.23	1.38	15.23
#FFFFFF	15.23	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#211D0C

Deuteranopia (green-blind)

#302A0B

Tritanopia (blue-blind)

#530010

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #4b100d;
/* rgb */ color: rgb(75, 16, 13);
/* oklch */ color: oklch(27.7% 0.089 27.5);

Tailwind

colors: {
  custom: {
    50: '#83534c',
    500: '#4b100d',
    950: '#000000',
  },
}

SCSS

$custom: #4b100d;
$custom-light: #83534c;
$custom-dark: #000000;

JSON

{
  "hex": "#4b100d",
  "rgb": {
    "r": 75,
    "g": 16,
    "b": 13
  },
  "hsl": {
    "h": 2.903,
    "s": 70.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.27721,
    "c": 0.08919,
    "h": 27.5
  },
  "luminance": 0.01895
}

Semantic roles & 50–950 ramp

primary

#4B100D

secondary

#2E8286

accent

#E5ED3B

background

#F8F4F4

surface

#F0E7E7

border

#CBC3C3

text

#0C0301

muted

#7D7877

Preview Lab

Preview with #4B100D

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

Preview Lab → · Contrast checker → · Palette generator →