#28040A#28040A

#28040A is a very dark, moderate red. Relative luminance 0.006; OKLCH L 18.5% C 0.061 H 14.3°. Best body text is #FFFFFF at 18.88:1 contrast (WCAG AA passes).

Color values

HEX	#28040A
RGB	rgb(40, 4, 10)
HSL	hsl(350, 82%, 9%)
HSV	hsv(350, 90%, 16%)
CMYK	cmyk(0%, 90%, 75%, 84.3%)
CIE-LAB	lab(5.06, 17.81, 3.80)
CIE-LCH	lch(5.06, 18.21, 12.05°)
OKLab	oklab(18.53% 0.0595 0.0152)
OKLCH	oklch(18.53% 0.061 14.3)
XYZ	xyz(0.9734, 0.5600, 0.3439)
Luminance	0.0056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28040A #042822

analogous

#28041C #28040A #281004

triadic

#28040A #0A2804 #040A28

tetradic

#28040A #1C2804 #042822 #100428

square

#28040A #1C2804 #042822 #100428

split-complementary

#28040A #042810 #041C28

monochromatic

#1C0307 #1C0307 #28040A #600A18 #970F26

Accessibility & contrast

On white

18.88

#28040A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#28040A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28040A

18.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28040A	#FFFFFF	#000000	##FFFFFF
##28040A	1.00	18.88	1.11	18.88
#FFFFFF	18.88	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D0C0A

Deuteranopia (green-blind)

#161409

Tritanopia (blue-blind)

#2D0006

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #28040a;
/* rgb */ color: rgb(40, 4, 10);
/* oklch */ color: oklch(18.5% 0.061 14.3);

Tailwind

colors: {
  custom: {
    50: '#64484b',
    500: '#28040a',
    950: '#000000',
  },
}

SCSS

$custom: #28040a;
$custom-light: #64484b;
$custom-dark: #000000;

JSON

{
  "hex": "#28040a",
  "rgb": {
    "r": 40,
    "g": 4,
    "b": 10
  },
  "hsl": {
    "h": 350,
    "s": 81.818,
    "l": 8.627
  },
  "oklch": {
    "l": 0.18534,
    "c": 0.06139,
    "h": 14.3
  },
  "luminance": 0.0056
}

Semantic roles & 50–950 ramp

primary

#28040A

secondary

#1D6B5E

accent

#F8D730

background

#F6F4F4

surface

#EBE6E7

border

#C6C2C3

text

#060001

muted

#7A7777

Preview Lab

Preview with #28040A

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

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