#170403#170403

#170403 is a very dark, muted red. Relative luminance 0.003; OKLCH L 14.5% C 0.038 H 27.9°. Best body text is #FFFFFF at 19.90:1 contrast (WCAG AA passes).

Color values

HEX	#170403
RGB	rgb(23, 4, 3)
HSL	hsl(3, 77%, 5%)
HSV	hsv(3, 87%, 9%)
CMYK	cmyk(0%, 82.6%, 87%, 91%)
CIE-LAB	lab(2.49, 6.20, 2.61)
CIE-LCH	lch(2.49, 6.72, 22.84°)
OKLab	oklab(14.46% 0.0336 0.0177)
OKLCH	oklch(14.46% 0.038 27.9)
XYZ	xyz(0.4132, 0.2756, 0.1176)
Luminance	0.0028 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170403 #031617

analogous

#17030C #170403 #170E03

triadic

#170403 #031704 #040317

tetradic

#170403 #0C1703 #031617 #0E0317

square

#170403 #0C1703 #031617 #0E0317

split-complementary

#170403 #03170E #030C17

monochromatic

#1B0504 #1B0504 #1B0504 #4D0D0A #831711

Accessibility & contrast

On white

19.90

#170403 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#170403 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170403

19.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170403	#FFFFFF	#000000	##FFFFFF
##170403	1.00	19.90	1.06	19.90
#FFFFFF	19.90	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#080703

Deuteranopia (green-blind)

#0D0B03

Tritanopia (blue-blind)

#1A0204

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #170403;
/* rgb */ color: rgb(23, 4, 3);
/* oklch */ color: oklch(14.5% 0.038 27.9);

Tailwind

colors: {
  custom: {
    50: '#534848',
    500: '#170403',
    950: '#000000',
  },
}

SCSS

$custom: #170403;
$custom-light: #534848;
$custom-dark: #000000;

JSON

{
  "hex": "#170403",
  "rgb": {
    "r": 23,
    "g": 4,
    "b": 3
  },
  "hsl": {
    "h": 3,
    "s": 76.923,
    "l": 5.098
  },
  "oklch": {
    "l": 0.1446,
    "c": 0.03795,
    "h": 27.9
  },
  "luminance": 0.00276
}

Semantic roles & 50–950 ramp

primary

#170403

secondary

#1B575B

accent

#EAF334

background

#F4F4F4

surface

#E7E6E6

border

#C3C2C2

text

#020000

muted

#787777

Preview Lab

Preview with #170403

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

Preview Lab → · Contrast checker → · Palette generator →