#A42739#A42739

#A42739 is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.9% C 0.160 H 18.1°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#A42739
RGB	rgb(164, 39, 57)
HSL	hsl(351, 62%, 40%)
HSV	hsv(351, 76%, 64%)
CMYK	cmyk(0%, 76.2%, 65.2%, 35.7%)
CIE-LAB	lab(37.19, 51.20, 20.82)
CIE-LCH	lch(37.19, 55.27, 22.13°)
OKLab	oklab(47.85% 0.1522 0.0498)
OKLCH	oklch(47.85% 0.16 18.1)
XYZ	xyz(16.7757, 9.6415, 4.8478)
Luminance	0.0964 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42739 #27A492

analogous

#A42778 #A42739 #A45427

triadic

#A42739 #39A427 #2739A4

tetradic

#A42739 #78A427 #27A492 #5427A4

square

#A42739 #78A427 #27A492 #5427A4

split-complementary

#A42739 #27A454 #2778A4

monochromatic

#410F17 #731B28 #A42739 #D0384E #DC6A7A

Accessibility & contrast

On white

7.17

#A42739 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#A42739 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42739

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42739	#FFFFFF	#000000	##FFFFFF
##A42739	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4739

Deuteranopia (green-blind)

#6A6135

Tritanopia (blue-blind)

#B4002F

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a42739;
/* rgb */ color: rgb(164, 39, 57);
/* oklch */ color: oklch(47.9% 0.160 18.1);

Tailwind

colors: {
  custom: {
    50: '#c66c6f',
    500: '#a42739',
    950: '#000000',
  },
}

SCSS

$custom: #a42739;
$custom-light: #c66c6f;
$custom-dark: #000000;

JSON

{
  "hex": "#a42739",
  "rgb": {
    "r": 164,
    "g": 39,
    "b": 57
  },
  "hsl": {
    "h": 351.36,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47852,
    "c": 0.16018,
    "h": 18.1
  },
  "luminance": 0.09639
}

Semantic roles & 50–950 ramp

primary

#A42739

secondary

#65C2B4

accent

#E5CD43

background

#FDF6F6

surface

#FAECEC

border

#D3C7C7

text

#140707

muted

#837A7A

Preview Lab

Preview with #A42739

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

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