#4B101E#4B101E

#4B101E is a dark, moderate red. Relative luminance 0.020; OKLCH L 28.1% C 0.088 H 11.1°. Best body text is #FFFFFF at 15.09:1 contrast (WCAG AA passes).

Color values

HEX	#4B101E
RGB	rgb(75, 16, 30)
HSL	hsl(346, 65%, 18%)
HSV	hsv(346, 79%, 29%)
CMYK	cmyk(0%, 78.7%, 60%, 70.6%)
CIE-LAB	lab(15.28, 28.65, 6.72)
CIE-LCH	lch(15.28, 29.43, 13.21°)
OKLab	oklab(28.09% 0.0867 0.017)
OKLCH	oklch(28.09% 0.088 11.1)
XYZ	xyz(3.3216, 1.9606, 1.4316)
Luminance	0.0196 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B101E #104B3D

analogous

#4B103B #4B101E #4B2010

triadic

#4B101E #1E4B10 #101E4B

tetradic

#4B101E #3B4B10 #104B3D #20104B

square

#4B101E #3B4B10 #104B3D #20104B

split-complementary

#4B101E #104B20 #103B4B

monochromatic

#19050A #19050A #4B101E #7D1B32 #B02646

Accessibility & contrast

On white

15.09

#4B101E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#4B101E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B101E

15.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B101E	#FFFFFF	#000000	##FFFFFF
##4B101E	1.00	15.09	1.39	15.09
#FFFFFF	15.09	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1F1E

Deuteranopia (green-blind)

#2E2B1D

Tritanopia (blue-blind)

#530416

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #4b101e;
/* rgb */ color: rgb(75, 16, 30);
/* oklch */ color: oklch(28.1% 0.088 11.1);

Tailwind

colors: {
  custom: {
    50: '#825359',
    500: '#4b101e',
    950: '#000000',
  },
}

SCSS

$custom: #4b101e;
$custom-light: #825359;
$custom-dark: #000000;

JSON

{
  "hex": "#4b101e",
  "rgb": {
    "r": 75,
    "g": 16,
    "b": 30
  },
  "hsl": {
    "h": 345.763,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.28092,
    "c": 0.08839,
    "h": 11.1
  },
  "luminance": 0.0196
}

Semantic roles & 50–950 ramp

primary

#4B101E

secondary

#328571

accent

#E8C040

background

#F8F4F5

surface

#EFE8E9

border

#CAC4C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4B101E

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

Preview Lab → · Contrast checker → · Palette generator →