#42150B#42150B

#42150B is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.6% C 0.073 H 34.1°. Best body text is #FFFFFF at 15.63:1 contrast (WCAG AA passes).

Color values

HEX	#42150B
RGB	rgb(66, 21, 11)
HSL	hsl(11, 71%, 15%)
HSV	hsv(11, 83%, 26%)
CMYK	cmyk(0%, 68.2%, 83.3%, 74.1%)
CIE-LAB	lab(13.94, 21.14, 16.70)
CIE-LCH	lch(13.94, 26.94, 38.31°)
OKLab	oklab(26.61% 0.0601 0.0406)
OKLCH	oklch(26.61% 0.073 34.1)
XYZ	xyz(2.5756, 1.7191, 0.5127)
Luminance	0.0172 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42150B #0B3842

analogous

#420B1C #42150B #42300B

triadic

#42150B #0B4215 #150B42

tetradic

#42150B #1C420B #0B3842 #300B42

square

#42150B #1C420B #0B3842 #300B42

split-complementary

#42150B #0B4230 #0B1C42

monochromatic

#1A0804 #1A0804 #42150B #762614 #AB361C

Accessibility & contrast

On white

15.63

#42150B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#42150B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42150B

15.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42150B	#FFFFFF	#000000	##FFFFFF
##42150B	1.00	15.63	1.34	15.63
#FFFFFF	15.63	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#211D0A

Deuteranopia (green-blind)

#2C270A

Tritanopia (blue-blind)

#490B13

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #42150b;
/* rgb */ color: rgb(66, 21, 11);
/* oklch */ color: oklch(26.6% 0.073 34.1);

Tailwind

colors: {
  custom: {
    50: '#7b544b',
    500: '#42150b',
    950: '#000000',
  },
}

SCSS

$custom: #42150b;
$custom-light: #7b544b;
$custom-dark: #000000;

JSON

{
  "hex": "#42150b",
  "rgb": {
    "r": 66,
    "g": 21,
    "b": 11
  },
  "hsl": {
    "h": 10.909,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.26611,
    "c": 0.07256,
    "h": 34.1
  },
  "luminance": 0.01719
}

Semantic roles & 50–950 ramp

primary

#42150B

secondary

#2A6F7F

accent

#CDEE3A

background

#F7F4F4

surface

#EEE8E7

border

#C9C4C3

text

#0A0301

muted

#7C7877

Preview Lab

Preview with #42150B

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

Preview Lab → · Contrast checker → · Palette generator →