#4B100F#4B100F

#4B100F is a dark, moderate red. Relative luminance 0.019; OKLCH L 27.8% C 0.089 H 25.9°. Best body text is #FFFFFF at 15.22:1 contrast (WCAG AA passes).

Color values

HEX	#4B100F
RGB	rgb(75, 16, 15)
HSL	hsl(1, 67%, 18%)
HSV	hsv(1, 80%, 29%)
CMYK	cmyk(0%, 78.7%, 80%, 70.6%)
CIE-LAB	lab(14.96, 27.55, 16.47)
CIE-LCH	lch(14.96, 32.10, 30.88°)
OKLab	oklab(27.75% 0.0799 0.0388)
OKLCH	oklch(27.75% 0.089 25.9)
XYZ	xyz(3.1735, 1.9014, 0.6517)
Luminance	0.0190 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B100F #0F4A4B

analogous

#4B0F2C #4B100F #4B2E0F

triadic

#4B100F #0F4B10 #100F4B

tetradic

#4B100F #2C4B0F #0F4A4B #2E0F4B

square

#4B100F #2C4B0F #0F4A4B #2E0F4B

split-complementary

#4B100F #0F4B2E #0F2C4B

monochromatic

#1A0505 #1A0505 #4B100F #7E1B19 #B12623

Accessibility & contrast

On white

15.22

#4B100F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#4B100F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B100F

15.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B100F	#FFFFFF	#000000	##FFFFFF
##4B100F	1.00	15.22	1.38	15.22
#FFFFFF	15.22	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#211D0E

Deuteranopia (green-blind)

#302A0D

Tritanopia (blue-blind)

#530010

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #4b100f;
/* rgb */ color: rgb(75, 16, 15);
/* oklch */ color: oklch(27.8% 0.089 25.9);

Tailwind

colors: {
  custom: {
    50: '#83534d',
    500: '#4b100f',
    950: '#000000',
  },
}

SCSS

$custom: #4b100f;
$custom-light: #83534d;
$custom-dark: #000000;

JSON

{
  "hex": "#4b100f",
  "rgb": {
    "r": 75,
    "g": 16,
    "b": 15
  },
  "hsl": {
    "h": 1,
    "s": 66.667,
    "l": 17.647
  },
  "oklch": {
    "l": 0.27752,
    "c": 0.08886,
    "h": 25.9
  },
  "luminance": 0.01901
}

Semantic roles & 50–950 ramp

primary

#4B100F

secondary

#308485

accent

#E7EA3E

background

#F8F4F4

surface

#F0E7E7

border

#CBC3C3

text

#0C0301

muted

#7D7877

Preview Lab

Preview with #4B100F

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

Preview Lab → · Contrast checker → · Palette generator →