#21090A#21090A

#21090A is a very dark, muted red. Relative luminance 0.005; OKLCH L 18.1% C 0.042 H 19.6°. Best body text is #FFFFFF at 18.95:1 contrast (WCAG AA passes).

Color values

HEX	#21090A
RGB	rgb(33, 9, 10)
HSL	hsl(358, 57%, 8%)
HSV	hsv(358, 73%, 13%)
CMYK	cmyk(0%, 72.7%, 69.7%, 87.1%)
CIE-LAB	lab(4.88, 10.89, 3.41)
CIE-LCH	lch(4.88, 11.41, 17.39°)
OKLab	oklab(18.06% 0.0392 0.0139)
OKLCH	oklch(18.06% 0.042 19.6)
XYZ	xyz(0.7797, 0.5407, 0.3504)
Luminance	0.0054 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21090A #092120

analogous

#210916 #21090A #211409

triadic

#21090A #0A2109 #090A21

tetradic

#21090A #162109 #092120 #140921

square

#21090A #162109 #092120 #140921

split-complementary

#21090A #092114 #091621

monochromatic

#180707 #180707 #21090A #511619 #812327

Accessibility & contrast

On white

18.95

#21090A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#21090A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21090A

18.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21090A	#FFFFFF	#000000	##FFFFFF
##21090A	1.00	18.95	1.11	18.95
#FFFFFF	18.95	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0D0A

Deuteranopia (green-blind)

#151209

Tritanopia (blue-blind)

#250609

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #21090a;
/* rgb */ color: rgb(33, 9, 10);
/* oklch */ color: oklch(18.1% 0.042 19.6);

Tailwind

colors: {
  custom: {
    50: '#5c4a4b',
    500: '#21090a',
    950: '#000000',
  },
}

SCSS

$custom: #21090a;
$custom-light: #5c4a4b;
$custom-dark: #000000;

JSON

{
  "hex": "#21090a",
  "rgb": {
    "r": 33,
    "g": 9,
    "b": 10
  },
  "hsl": {
    "h": 357.5,
    "s": 57.143,
    "l": 8.235
  },
  "oklch": {
    "l": 0.18055,
    "c": 0.04157,
    "h": 19.6
  },
  "luminance": 0.00541
}

Semantic roles & 50–950 ramp

primary

#21090A

secondary

#285E5B

accent

#E0DA47

background

#F5F4F4

surface

#E9E7E7

border

#C5C3C3

text

#040101

muted

#797777

Preview Lab

Preview with #21090A

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

Preview Lab → · Contrast checker → · Palette generator →