#A63D38#A63D38

#A63D38 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.6% C 0.140 H 26.1°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#A63D38
RGB	rgb(166, 61, 56)
HSL	hsl(3, 50%, 44%)
HSV	hsv(3, 66%, 65%)
CMYK	cmyk(0%, 63.3%, 66.3%, 34.9%)
CIE-LAB	lab(40.79, 42.94, 26.04)
CIE-LCH	lch(40.79, 50.22, 31.24°)
OKLab	oklab(50.6% 0.1256 0.0614)
OKLCH	oklch(50.6% 0.14 26.1)
XYZ	xyz(18.1102, 11.7325, 5.0516)
Luminance	0.1173 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D38 #38A1A6

analogous

#A6386A #A63D38 #A67438

triadic

#A63D38 #38A63D #3D38A6

tetradic

#A63D38 #6AA638 #38A1A6 #7438A6

square

#A63D38 #6AA638 #38A1A6 #7438A6

split-complementary

#A63D38 #38A674 #386AA6

monochromatic

#4A1B19 #782C29 #A63D38 #C65B55 #D58783

Accessibility & contrast

On white

6.28

#A63D38 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#A63D38 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D38

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D38	#FFFFFF	#000000	##FFFFFF
##A63D38	1.00	6.28	3.35	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595237

Deuteranopia (green-blind)

#736935

Tritanopia (blue-blind)

#B6263D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d38;
/* rgb */ color: rgb(166, 61, 56);
/* oklch */ color: oklch(50.6% 0.140 26.1);

Tailwind

colors: {
  custom: {
    50: '#c7776e',
    500: '#a63d38',
    950: '#000000',
  },
}

SCSS

$custom: #a63d38;
$custom-light: #c7776e;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d38",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 56
  },
  "hsl": {
    "h": 2.727,
    "s": 49.55,
    "l": 43.529
  },
  "oklch": {
    "l": 0.50602,
    "c": 0.13977,
    "h": 26.1
  },
  "luminance": 0.1173
}

Semantic roles & 50–950 ramp

primary

#A63D38

secondary

#7BBCBF

accent

#D3D94F

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63D38

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

Preview Lab → · Contrast checker → · Palette generator →