#42151C#42151C

#42151C is a dark, moderate red. Relative luminance 0.018; OKLCH L 27.0% C 0.070 H 13.7°. Best body text is #FFFFFF at 15.49:1 contrast (WCAG AA passes).

Color values

HEX	#42151C
RGB	rgb(66, 21, 28)
HSL	hsl(351, 52%, 17%)
HSV	hsv(351, 68%, 26%)
CMYK	cmyk(0%, 68.2%, 57.6%, 74.1%)
CIE-LAB	lab(14.28, 22.50, 6.52)
CIE-LCH	lch(14.28, 23.43, 16.15°)
OKLab	oklab(26.98% 0.0679 0.0165)
OKLCH	oklch(26.98% 0.07 13.7)
XYZ	xyz(2.7247, 1.7788, 1.2982)
Luminance	0.0178 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42151C #15423B

analogous

#421533 #42151C #422515

triadic

#42151C #1C4215 #151C42

tetradic

#42151C #334215 #15423B #251542

square

#42151C #334215 #15423B #251542

split-complementary

#42151C #154225 #153342

monochromatic

#17070A #17070A #42151C #702430 #9F3343

Accessibility & contrast

On white

15.49

#42151C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#42151C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42151C

15.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42151C	#FFFFFF	#000000	##FFFFFF
##42151C	1.00	15.49	1.36	15.49
#FFFFFF	15.49	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1E1C

Deuteranopia (green-blind)

#2B281B

Tritanopia (blue-blind)

#490E18

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #42151c;
/* rgb */ color: rgb(66, 21, 28);
/* oklch */ color: oklch(27.0% 0.070 13.7);

Tailwind

colors: {
  custom: {
    50: '#7a5557',
    500: '#42151c',
    950: '#000000',
  },
}

SCSS

$custom: #42151c;
$custom-light: #7a5557;
$custom-dark: #000000;

JSON

{
  "hex": "#42151c",
  "rgb": {
    "r": 66,
    "g": 21,
    "b": 28
  },
  "hsl": {
    "h": 350.667,
    "s": 51.724,
    "l": 17.059
  },
  "oklch": {
    "l": 0.2698,
    "c": 0.06991,
    "h": 13.7
  },
  "luminance": 0.01778
}

Semantic roles & 50–950 ramp

primary

#42151C

secondary

#397A70

accent

#DBC54D

background

#F7F5F5

surface

#EEE9E9

border

#C9C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #42151C

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

Preview Lab → · Contrast checker → · Palette generator →