#75181B#75181B

#75181B is a dark, vivid red. Relative luminance 0.045; OKLCH L 37.1% C 0.127 H 24.5°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#75181B
RGB	rgb(117, 24, 27)
HSL	hsl(358, 66%, 28%)
HSV	hsv(358, 79%, 46%)
CMYK	cmyk(0%, 79.5%, 76.9%, 54.1%)
CIE-LAB	lab(25.31, 39.80, 23.34)
CIE-LCH	lch(25.31, 46.14, 30.38°)
OKLab	oklab(37.15% 0.1157 0.0527)
OKLCH	oklch(37.15% 0.127 24.5)
XYZ	xyz(7.8615, 4.5155, 1.4943)
Luminance	0.0451 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#75181B #187572

analogous

#751849 #75181B #754418

triadic

#75181B #1B7518 #181B75

tetradic

#75181B #497518 #187572 #441875

square

#75181B #497518 #187572 #441875

split-complementary

#75181B #187544 #184975

monochromatic

#190506 #420E0F #75181B #A82227 #D53238

Accessibility & contrast

On white

11.04

#75181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#75181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #75181B

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##75181B	#FFFFFF	#000000	##FFFFFF
##75181B	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#342F1A

Deuteranopia (green-blind)

#4B4318

Tritanopia (blue-blind)

#81001A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #75181b;
/* rgb */ color: rgb(117, 24, 27);
/* oklch */ color: oklch(37.1% 0.127 24.5);

Tailwind

colors: {
  custom: {
    50: '#a45e57',
    500: '#75181b',
    950: '#000000',
  },
}

SCSS

$custom: #75181b;
$custom-light: #a45e57;
$custom-dark: #000000;

JSON

{
  "hex": "#75181b",
  "rgb": {
    "r": 117,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 358.065,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.3715,
    "c": 0.12709,
    "h": 24.5
  },
  "luminance": 0.04514
}

Semantic roles & 50–950 ramp

primary

#75181B

secondary

#3FAAA7

accent

#E9E33F

background

#FAF5F5

surface

#F4E9E9

border

#CEC5C5

text

#110503

muted

#807978

Preview Lab

Preview with #75181B

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

Preview Lab → · Contrast checker → · Palette generator →