#21030A#21030A

#21030A is a very dark, muted red. Relative luminance 0.004; OKLCH L 16.7% C 0.055 H 8.4°. Best body text is #FFFFFF at 19.41:1 contrast (WCAG AA passes).

Color values

HEX	#21030A
RGB	rgb(33, 3, 10)
HSL	hsl(346, 83%, 7%)
HSV	hsv(346, 91%, 13%)
CMYK	cmyk(0%, 90.9%, 69.7%, 87.1%)
CIE-LAB	lab(3.71, 13.29, 1.69)
CIE-LCH	lch(3.71, 13.40, 7.25°)
OKLab	oklab(16.72% 0.0545 0.008)
OKLCH	oklch(16.72% 0.055 8.4)
XYZ	xyz(0.7146, 0.4105, 0.3287)
Luminance	0.0041 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21030A #03211A

analogous

#210319 #21030A #210B03

triadic

#21030A #0A2103 #030A21

tetradic

#21030A #192103 #03211A #0B0321

square

#21030A #192103 #03211A #0B0321

split-complementary

#21030A #03210B #031921

monochromatic

#1C0309 #1C0309 #21030A #59081B #910D2C

Accessibility & contrast

On white

19.41

#21030A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#21030A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21030A

19.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21030A	#FFFFFF	#000000	##FFFFFF
##21030A	1.00	19.41	1.08	19.41
#FFFFFF	19.41	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09090A

Deuteranopia (green-blind)

#111009

Tritanopia (blue-blind)

#250005

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #21030a;
/* rgb */ color: rgb(33, 3, 10);
/* oklch */ color: oklch(16.7% 0.055 8.4);

Tailwind

colors: {
  custom: {
    50: '#5c484b',
    500: '#21030a',
    950: '#000000',
  },
}

SCSS

$custom: #21030a;
$custom-light: #5c484b;
$custom-dark: #000000;

JSON

{
  "hex": "#21030a",
  "rgb": {
    "r": 33,
    "g": 3,
    "b": 10
  },
  "hsl": {
    "h": 346,
    "s": 83.333,
    "l": 7.059
  },
  "oklch": {
    "l": 0.1672,
    "c": 0.05503,
    "h": 8.4
  },
  "luminance": 0.0041
}

Semantic roles & 50–950 ramp

primary

#21030A

secondary

#1B6554

accent

#FACA2E

background

#F5F4F4

surface

#E9E6E7

border

#C5C2C3

text

#040001

muted

#797777

Preview Lab

Preview with #21030A

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

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