#4B150B#4B150B

#4B150B is a dark, moderate red. Relative luminance 0.021; OKLCH L 28.3% C 0.084 H 32.6°. Best body text is #FFFFFF at 14.88:1 contrast (WCAG AA passes).

Color values

HEX	#4B150B
RGB	rgb(75, 21, 11)
HSL	hsl(9, 74%, 17%)
HSV	hsv(9, 85%, 29%)
CMYK	cmyk(0%, 72%, 85.3%, 70.6%)
CIE-LAB	lab(15.78, 24.97, 19.44)
CIE-LCH	lch(15.78, 31.64, 37.90°)
OKLab	oklab(28.35% 0.0709 0.0454)
OKLCH	oklch(28.35% 0.084 32.6)
XYZ	xyz(3.2306, 2.0568, 0.5434)
Luminance	0.0206 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B150B #0B414B

analogous

#4B0B21 #4B150B #4B350B

triadic

#4B150B #0B4B15 #150B4B

tetradic

#4B150B #214B0B #0B414B #350B4B

square

#4B150B #214B0B #0B414B #350B4B

split-complementary

#4B150B #0B4B35 #0B214B

monochromatic

#1B0704 #1B0704 #4B150B #802413 #B6331B

Accessibility & contrast

On white

14.88

#4B150B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#4B150B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B150B

14.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B150B	#FFFFFF	#000000	##FFFFFF
##4B150B	1.00	14.88	1.41	14.88
#FFFFFF	14.88	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24200A

Deuteranopia (green-blind)

#322C09

Tritanopia (blue-blind)

#530613

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #4b150b;
/* rgb */ color: rgb(75, 21, 11);
/* oklch */ color: oklch(28.3% 0.084 32.6);

Tailwind

colors: {
  custom: {
    50: '#83554b',
    500: '#4b150b',
    950: '#000000',
  },
}

SCSS

$custom: #4b150b;
$custom-light: #83554b;
$custom-dark: #000000;

JSON

{
  "hex": "#4b150b",
  "rgb": {
    "r": 75,
    "g": 21,
    "b": 11
  },
  "hsl": {
    "h": 9.375,
    "s": 74.419,
    "l": 16.863
  },
  "oklch": {
    "l": 0.2835,
    "c": 0.08418,
    "h": 32.6
  },
  "luminance": 0.02056
}

Semantic roles & 50–950 ramp

primary

#4B150B

secondary

#2B7987

accent

#D4F137

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0301

muted

#7D7877

Preview Lab

Preview with #4B150B

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

Preview Lab → · Contrast checker → · Palette generator →