#42151F#42151F

#42151F is a dark, moderate red. Relative luminance 0.018; OKLCH L 27.1% C 0.070 H 9.4°. Best body text is #FFFFFF at 15.45:1 contrast (WCAG AA passes).

Color values

HEX	#42151F
RGB	rgb(66, 21, 31)
HSL	hsl(347, 52%, 17%)
HSV	hsv(347, 68%, 26%)
CMYK	cmyk(0%, 68.2%, 53%, 74.1%)
CIE-LAB	lab(14.37, 22.84, 4.44)
CIE-LCH	lch(14.37, 23.27, 11.01°)
OKLab	oklab(27.07% 0.0693 0.0115)
OKLCH	oklch(27.07% 0.07 9.4)
XYZ	xyz(2.7625, 1.7938, 1.4968)
Luminance	0.0179 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42151F #154238

analogous

#421536 #42151F #422215

triadic

#42151F #1F4215 #151F42

tetradic

#42151F #364215 #154238 #221542

square

#42151F #364215 #154238 #221542

split-complementary

#42151F #154222 #153642

monochromatic

#17070B #17070B #42151F #702435 #9F334B

Accessibility & contrast

On white

15.45

#42151F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#42151F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42151F

15.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42151F	#FFFFFF	#000000	##FFFFFF
##42151F	1.00	15.45	1.36	15.45
#FFFFFF	15.45	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1F1F

Deuteranopia (green-blind)

#2A281E

Tritanopia (blue-blind)

#480F19

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #42151f;
/* rgb */ color: rgb(66, 21, 31);
/* oklch */ color: oklch(27.1% 0.070 9.4);

Tailwind

colors: {
  custom: {
    50: '#79555a',
    500: '#42151f',
    950: '#000000',
  },
}

SCSS

$custom: #42151f;
$custom-light: #79555a;
$custom-dark: #000000;

JSON

{
  "hex": "#42151f",
  "rgb": {
    "r": 66,
    "g": 21,
    "b": 31
  },
  "hsl": {
    "h": 346.667,
    "s": 51.724,
    "l": 17.059
  },
  "oklch": {
    "l": 0.27071,
    "c": 0.07029,
    "h": 9.4
  },
  "luminance": 0.01794
}

Semantic roles & 50–950 ramp

primary

#42151F

secondary

#397A6B

accent

#DBBB4D

background

#F7F5F5

surface

#EEE9E9

border

#C9C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #42151F

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

Preview Lab → · Contrast checker → · Palette generator →