#40030C#40030C

#40030C is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.9% C 0.090 H 19.7°. Best body text is #FFFFFF at 16.98:1 contrast (WCAG AA passes).

Color values

HEX	#40030C
RGB	rgb(64, 3, 12)
HSL	hsl(351, 91%, 13%)
HSV	hsv(351, 95%, 25%)
CMYK	cmyk(0%, 95.3%, 81.2%, 74.9%)
CIE-LAB	lab(10.42, 28.89, 11.40)
CIE-LCH	lch(10.42, 31.06, 21.54°)
OKLab	oklab(23.91% 0.0851 0.0304)
OKLCH	oklch(23.91% 0.09 19.7)
XYZ	xyz(2.2135, 1.1820, 0.4594)
Luminance	0.0118 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40030C #034037

analogous

#40032A #40030C #401803

triadic

#40030C #0C4003 #030C40

tetradic

#40030C #2A4003 #034037 #180340

square

#40030C #2A4003 #034037 #180340

split-complementary

#40030C #034018 #032A40

monochromatic

#1D0105 #1D0105 #40030C #7A0617 #B50822

Accessibility & contrast

On white

16.98

#40030C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#40030C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40030C

16.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40030C	#FFFFFF	#000000	##FFFFFF
##40030C	1.00	16.98	1.24	16.98
#FFFFFF	16.98	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16140C

Deuteranopia (green-blind)

#25210A

Tritanopia (blue-blind)

#470007

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #40030c;
/* rgb */ color: rgb(64, 3, 12);
/* oklch */ color: oklch(23.9% 0.090 19.7);

Tailwind

colors: {
  custom: {
    50: '#7a4b4c',
    500: '#40030c',
    950: '#000000',
  },
}

SCSS

$custom: #40030c;
$custom-light: #7a4b4c;
$custom-dark: #000000;

JSON

{
  "hex": "#40030c",
  "rgb": {
    "r": 64,
    "g": 3,
    "b": 12
  },
  "hsl": {
    "h": 351.148,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.2391,
    "c": 0.0904,
    "h": 19.7
  },
  "luminance": 0.01182
}

Semantic roles & 50–950 ramp

primary

#40030C

secondary

#1D8273

accent

#FFDF29

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #40030C

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

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