#42100E#42100E

#42100E is a dark, moderate red. Relative luminance 0.016; OKLCH L 25.9% C 0.078 H 26.4°. Best body text is #FFFFFF at 16.00:1 contrast (WCAG AA passes).

Color values

HEX	#42100E
RGB	rgb(66, 16, 14)
HSL	hsl(2, 65%, 16%)
HSV	hsv(2, 79%, 26%)
CMYK	cmyk(0%, 75.8%, 78.8%, 74.1%)
CIE-LAB	lab(12.99, 23.97, 14.04)
CIE-LCH	lch(12.99, 27.78, 30.36°)
OKLab	oklab(25.91% 0.0697 0.0345)
OKLCH	oklch(25.91% 0.078 26.4)
XYZ	xyz(2.5116, 1.5609, 0.5844)
Luminance	0.0156 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42100E #0E4042

analogous

#420E26 #42100E #422A0E

triadic

#42100E #0E4210 #100E42

tetradic

#42100E #26420E #0E4042 #2A0E42

square

#42100E #26420E #0E4042 #2A0E42

split-complementary

#42100E #0E422A #0E2642

monochromatic

#190605 #190605 #42100E #741C19 #A72823

Accessibility & contrast

On white

16.00

#42100E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#42100E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42100E

16.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42100E	#FFFFFF	#000000	##FFFFFF
##42100E	1.00	16.00	1.31	16.00
#FFFFFF	16.00	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1B0D

Deuteranopia (green-blind)

#2A260C

Tritanopia (blue-blind)

#490410

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #42100e;
/* rgb */ color: rgb(66, 16, 14);
/* oklch */ color: oklch(25.9% 0.078 26.4);

Tailwind

colors: {
  custom: {
    50: '#7b524d',
    500: '#42100e',
    950: '#000000',
  },
}

SCSS

$custom: #42100e;
$custom-light: #7b524d;
$custom-dark: #000000;

JSON

{
  "hex": "#42100e",
  "rgb": {
    "r": 66,
    "g": 16,
    "b": 14
  },
  "hsl": {
    "h": 2.308,
    "s": 65,
    "l": 15.686
  },
  "oklch": {
    "l": 0.25912,
    "c": 0.07778,
    "h": 26.4
  },
  "luminance": 0.01561
}

Semantic roles & 50–950 ramp

primary

#42100E

secondary

#2F7A7D

accent

#E2E840

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #42100E

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

Preview Lab → · Contrast checker → · Palette generator →