#A63B29#A63B29

#A63B29 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.1% C 0.145 H 31.9°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#A63B29
RGB	rgb(166, 59, 41)
HSL	hsl(9, 60%, 41%)
HSV	hsv(9, 75%, 65%)
CMYK	cmyk(0%, 64.5%, 75.3%, 34.9%)
CIE-LAB	lab(40.24, 43.06, 34.20)
CIE-LCH	lch(40.24, 54.99, 38.46°)
OKLab	oklab(50.13% 0.1229 0.0765)
OKLCH	oklch(50.13% 0.145 31.9)
XYZ	xyz(17.6920, 11.3975, 3.3657)
Luminance	0.1139 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B29 #2994A6

analogous

#A62955 #A63B29 #A67929

triadic

#A63B29 #29A63B #3B29A6

tetradic

#A63B29 #55A629 #2994A6 #7929A6

square

#A63B29 #55A629 #2994A6 #7929A6

split-complementary

#A63B29 #29A679 #2955A6

monochromatic

#441811 #752A1D #A63B29 #CF523D #DB7E6E

Accessibility & contrast

On white

6.40

#A63B29 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A63B29 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B29

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B29	#FFFFFF	#000000	##FFFFFF
##A63B29	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595026

Deuteranopia (green-blind)

#736825

Tritanopia (blue-blind)

#B72037

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b29;
/* rgb */ color: rgb(166, 59, 41);
/* oklch */ color: oklch(50.1% 0.145 31.9);

Tailwind

colors: {
  custom: {
    50: '#c87664',
    500: '#a63b29',
    950: '#000000',
  },
}

SCSS

$custom: #a63b29;
$custom-light: #c87664;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b29",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 41
  },
  "hsl": {
    "h": 8.64,
    "s": 60.386,
    "l": 40.588
  },
  "oklch": {
    "l": 0.50126,
    "c": 0.14479,
    "h": 31.9
  },
  "luminance": 0.11395
}

Semantic roles & 50–950 ramp

primary

#A63B29

secondary

#69B5C2

accent

#CDE444

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140905

muted

#837B7A

Preview Lab

Preview with #A63B29

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

Preview Lab → · Contrast checker → · Palette generator →