#42101C#42101C

#42101C is a dark, moderate red. Relative luminance 0.016; OKLCH L 26.3% C 0.077 H 9.9°. Best body text is #FFFFFF at 15.88:1 contrast (WCAG AA passes).

Color values

HEX	#42101C
RGB	rgb(66, 16, 28)
HSL	hsl(346, 61%, 16%)
HSV	hsv(346, 76%, 26%)
CMYK	cmyk(0%, 75.8%, 57.6%, 74.1%)
CIE-LAB	lab(13.31, 25.13, 5.17)
CIE-LCH	lch(13.31, 25.65, 11.62°)
OKLab	oklab(26.25% 0.0763 0.0132)
OKLCH	oklch(26.25% 0.077 9.9)
XYZ	xyz(2.6419, 1.6130, 1.2706)
Luminance	0.0161 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42101C #104236

analogous

#421035 #42101C #421D10

triadic

#42101C #1C4210 #101C42

tetradic

#42101C #354210 #104236 #1D1042

square

#42101C #354210 #104236 #1D1042

split-complementary

#42101C #10421D #103542

monochromatic

#19060A #19060A #42101C #731C31 #A52846

Accessibility & contrast

On white

15.88

#42101C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#42101C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42101C

15.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42101C	#FFFFFF	#000000	##FFFFFF
##42101C	1.00	15.88	1.32	15.88
#FFFFFF	15.88	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C1C1C

Deuteranopia (green-blind)

#29261B

Tritanopia (blue-blind)

#490715

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #42101c;
/* rgb */ color: rgb(66, 16, 28);
/* oklch */ color: oklch(26.3% 0.077 9.9);

Tailwind

colors: {
  custom: {
    50: '#7a5257',
    500: '#42101c',
    950: '#000000',
  },
}

SCSS

$custom: #42101c;
$custom-light: #7a5257;
$custom-dark: #000000;

JSON

{
  "hex": "#42101c",
  "rgb": {
    "r": 66,
    "g": 16,
    "b": 28
  },
  "hsl": {
    "h": 345.6,
    "s": 60.976,
    "l": 16.078
  },
  "oklch": {
    "l": 0.26254,
    "c": 0.07739,
    "h": 9.9
  },
  "luminance": 0.01613
}

Semantic roles & 50–950 ramp

primary

#42101C

secondary

#327C6A

accent

#E4BE44

background

#F7F4F5

surface

#EEE7E9

border

#C9C3C5

text

#0A0203

muted

#7C7878

Preview Lab

Preview with #42101C

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

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