#2A0103#2A0103

#2A0103 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.2% C 0.070 H 23.9°. Best body text is #FFFFFF at 19.02:1 contrast (WCAG AA passes).

Color values

HEX	#2A0103
RGB	rgb(42, 1, 3)
HSL	hsl(357, 95%, 8%)
HSV	hsv(357, 98%, 16%)
CMYK	cmyk(0%, 97.6%, 92.9%, 83.5%)
CIE-LAB	lab(4.70, 19.67, 6.18)
CIE-LCH	lch(4.70, 20.62, 17.44°)
OKLab	oklab(18.2% 0.0644 0.0286)
OKLCH	oklch(18.2% 0.07 23.9)
XYZ	xyz(0.9823, 0.5207, 0.1349)
Luminance	0.0052 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A0103 #012A28

analogous

#2A0117 #2A0103 #2A1301

triadic

#2A0103 #032A01 #01032A

tetradic

#2A0103 #172A01 #012A28 #13012A

square

#2A0103 #172A01 #012A28 #13012A

split-complementary

#2A0103 #012A13 #01172A

monochromatic

#1E0102 #1E0102 #2A0103 #660207 #A2040C

Accessibility & contrast

On white

19.02

#2A0103 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#2A0103 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A0103

19.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A0103	#FFFFFF	#000000	##FFFFFF
##2A0103	1.00	19.02	1.10	19.02
#FFFFFF	19.02	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0A03

Deuteranopia (green-blind)

#171302

Tritanopia (blue-blind)

#2F0002

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #2a0103;
/* rgb */ color: rgb(42, 1, 3);
/* oklch */ color: oklch(18.2% 0.070 23.9);

Tailwind

colors: {
  custom: {
    50: '#664648',
    500: '#2a0103',
    950: '#000000',
  },
}

SCSS

$custom: #2a0103;
$custom-light: #664648;
$custom-dark: #000000;

JSON

{
  "hex": "#2a0103",
  "rgb": {
    "r": 42,
    "g": 1,
    "b": 3
  },
  "hsl": {
    "h": 357.073,
    "s": 95.349,
    "l": 8.431
  },
  "oklch": {
    "l": 0.18199,
    "c": 0.07042,
    "h": 23.9
  },
  "luminance": 0.00521
}

Semantic roles & 50–950 ramp

primary

#2A0103

secondary

#16706C

accent

#FFF529

background

#F6F3F4

surface

#EBE5E6

border

#C6C1C2

text

#060000

muted

#7A7677

Preview Lab

Preview with #2A0103

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

Preview Lab → · Contrast checker → · Palette generator →