#A42A21#A42A21

#A42A21 is a mid, vivid red. Relative luminance 0.097; OKLCH L 47.8% C 0.160 H 28.8°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#A42A21
RGB	rgb(164, 42, 33)
HSL	hsl(4, 66%, 39%)
HSV	hsv(4, 80%, 64%)
CMYK	cmyk(0%, 74.4%, 79.9%, 35.7%)
CIE-LAB	lab(37.23, 49.01, 35.39)
CIE-LCH	lch(37.23, 60.46, 35.83°)
OKLab	oklab(47.77% 0.1401 0.077)
OKLCH	oklch(47.77% 0.16 28.8)
XYZ	xyz(16.4143, 9.6608, 2.4390)
Luminance	0.0966 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42A21 #219BA4

analogous

#A42159 #A42A21 #A46B21

triadic

#A42A21 #21A42A #2A21A4

tetradic

#A42A21 #59A421 #219BA4 #6B21A4

square

#A42A21 #59A421 #219BA4 #6B21A4

split-complementary

#A42A21 #21A46B #2159A4

monochromatic

#3E100C #711D17 #A42A21 #D5392D #DF6960

Accessibility & contrast

On white

7.16

#A42A21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#A42A21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42A21

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42A21	#FFFFFF	#000000	##FFFFFF
##A42A21	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F471F

Deuteranopia (green-blind)

#6D611C

Tritanopia (blue-blind)

#B50029

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #a42a21;
/* rgb */ color: rgb(164, 42, 33);
/* oklch */ color: oklch(47.8% 0.160 28.8);

Tailwind

colors: {
  custom: {
    50: '#c86d5d',
    500: '#a42a21',
    950: '#000000',
  },
}

SCSS

$custom: #a42a21;
$custom-light: #c86d5d;
$custom-dark: #000000;

JSON

{
  "hex": "#a42a21",
  "rgb": {
    "r": 164,
    "g": 42,
    "b": 33
  },
  "hsl": {
    "h": 4.122,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.47769,
    "c": 0.15988,
    "h": 28.8
  },
  "luminance": 0.09658
}

Semantic roles & 50–950 ramp

primary

#A42A21

secondary

#5DBDC4

accent

#DEE93E

background

#FDF6F5

surface

#FAECE9

border

#D3C7C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A42A21

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

Preview Lab → · Contrast checker → · Palette generator →