#A42738#A42738

#A42738 is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.8% C 0.160 H 18.6°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#A42738
RGB	rgb(164, 39, 56)
HSL	hsl(352, 62%, 40%)
HSV	hsv(352, 76%, 64%)
CMYK	cmyk(0%, 76.2%, 65.9%, 35.7%)
CIE-LAB	lab(37.17, 51.14, 21.43)
CIE-LCH	lch(37.17, 55.45, 22.74°)
OKLab	oklab(47.83% 0.1518 0.0511)
OKLCH	oklch(47.83% 0.16 18.6)
XYZ	xyz(16.7510, 9.6316, 4.7177)
Luminance	0.0963 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42738 #27A493

analogous

#A42777 #A42738 #A45527

triadic

#A42738 #38A427 #2738A4

tetradic

#A42738 #77A427 #27A493 #5527A4

square

#A42738 #77A427 #27A493 #5527A4

split-complementary

#A42738 #27A455 #2777A4

monochromatic

#410F16 #731B27 #A42738 #D0384D #DC6A79

Accessibility & contrast

On white

7.18

#A42738 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#A42738 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42738

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42738	#FFFFFF	#000000	##FFFFFF
##A42738	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4738

Deuteranopia (green-blind)

#6A6134

Tritanopia (blue-blind)

#B4002E

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a42738;
/* rgb */ color: rgb(164, 39, 56);
/* oklch */ color: oklch(47.8% 0.160 18.6);

Tailwind

colors: {
  custom: {
    50: '#c66c6e',
    500: '#a42738',
    950: '#000000',
  },
}

SCSS

$custom: #a42738;
$custom-light: #c66c6e;
$custom-dark: #000000;

JSON

{
  "hex": "#a42738",
  "rgb": {
    "r": 164,
    "g": 39,
    "b": 56
  },
  "hsl": {
    "h": 351.84,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47832,
    "c": 0.1602,
    "h": 18.6
  },
  "luminance": 0.09629
}

Semantic roles & 50–950 ramp

primary

#A42738

secondary

#65C2B5

accent

#E5CF43

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#140707

muted

#837A7A

Preview Lab

Preview with #A42738

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

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