#210403#210403

#210403 is a very dark, muted red. Relative luminance 0.004; OKLCH L 16.7% C 0.053 H 27.8°. Best body text is #FFFFFF at 19.38:1 contrast (WCAG AA passes).

Color values

HEX	#210403
RGB	rgb(33, 4, 3)
HSL	hsl(2, 83%, 7%)
HSV	hsv(2, 91%, 13%)
CMYK	cmyk(0%, 87.9%, 90.9%, 87.1%)
CIE-LAB	lab(3.76, 11.92, 4.63)
CIE-LCH	lch(3.76, 12.78, 21.21°)
OKLab	oklab(16.72% 0.0467 0.0246)
OKLCH	oklch(16.72% 0.053 27.8)
XYZ	xyz(0.6871, 0.4168, 0.1304)
Luminance	0.0042 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210403 #032021

analogous

#210311 #210403 #211303

triadic

#210403 #032104 #040321

tetradic

#210403 #112103 #032021 #130321

square

#210403 #112103 #032021 #130321

split-complementary

#210403 #032113 #031121

monochromatic

#1C0303 #1C0303 #210403 #590B08 #91120D

Accessibility & contrast

On white

19.38

#210403 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#210403 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210403

19.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210403	#FFFFFF	#000000	##FFFFFF
##210403	1.00	19.38	1.08	19.38
#FFFFFF	19.38	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0903

Deuteranopia (green-blind)

#131002

Tritanopia (blue-blind)

#250004

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #210403;
/* rgb */ color: rgb(33, 4, 3);
/* oklch */ color: oklch(16.7% 0.053 27.8);

Tailwind

colors: {
  custom: {
    50: '#5c4848',
    500: '#210403',
    950: '#000000',
  },
}

SCSS

$custom: #210403;
$custom-light: #5c4848;
$custom-dark: #000000;

JSON

{
  "hex": "#210403",
  "rgb": {
    "r": 33,
    "g": 4,
    "b": 3
  },
  "hsl": {
    "h": 2,
    "s": 83.333,
    "l": 7.059
  },
  "oklch": {
    "l": 0.16716,
    "c": 0.05281,
    "h": 27.8
  },
  "luminance": 0.00417
}

Semantic roles & 50–950 ramp

primary

#210403

secondary

#1B6365

accent

#F3FA2E

background

#F5F4F4

surface

#E9E6E6

border

#C5C2C2

text

#040000

muted

#797777

Preview Lab

Preview with #210403

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

Preview Lab → · Contrast checker → · Palette generator →