#A63039#A63039

#A63039 is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.1% C 0.153 H 20.8°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#A63039
RGB	rgb(166, 48, 57)
HSL	hsl(355, 55%, 42%)
HSV	hsv(355, 71%, 65%)
CMYK	cmyk(0%, 71.1%, 65.7%, 34.9%)
CIE-LAB	lab(38.76, 48.55, 22.90)
CIE-LCH	lch(38.76, 53.68, 25.25°)
OKLab	oklab(49.09% 0.1435 0.0545)
OKLCH	oklch(49.09% 0.154 20.8)
XYZ	xyz(17.5232, 10.5188, 4.9777)
Luminance	0.1052 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63039 #30A69D

analogous

#A63074 #A63039 #A66230

triadic

#A63039 #39A630 #3039A6

tetradic

#A63039 #74A630 #30A69D #6230A6

square

#A63039 #74A630 #30A69D #6230A6

split-complementary

#A63039 #30A662 #3074A6

monochromatic

#471518 #772229 #A63039 #CA4953 #D87880

Accessibility & contrast

On white

6.77

#A63039 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#A63039 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63039

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63039	#FFFFFF	#000000	##FFFFFF
##A63039	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504B38

Deuteranopia (green-blind)

#6E6436

Tritanopia (blue-blind)

#B60C34

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a63039;
/* rgb */ color: rgb(166, 48, 57);
/* oklch */ color: oklch(49.1% 0.153 20.8);

Tailwind

colors: {
  custom: {
    50: '#c7716f',
    500: '#a63039',
    950: '#000000',
  },
}

SCSS

$custom: #a63039;
$custom-light: #c7716f;
$custom-dark: #000000;

JSON

{
  "hex": "#a63039",
  "rgb": {
    "r": 166,
    "g": 48,
    "b": 57
  },
  "hsl": {
    "h": 355.424,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.49087,
    "c": 0.1535,
    "h": 20.8
  },
  "luminance": 0.10516
}

Semantic roles & 50–950 ramp

primary

#A63039

secondary

#71C0BA

accent

#DED349

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140807

muted

#837B7A

Preview Lab

Preview with #A63039

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

Preview Lab → · Contrast checker → · Palette generator →