#A63E21#A63E21

#A63E21 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.4% C 0.144 H 36.1°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#A63E21
RGB	rgb(166, 62, 33)
HSL	hsl(13, 67%, 39%)
HSV	hsv(13, 80%, 65%)
CMYK	cmyk(0%, 62.7%, 80.1%, 34.9%)
CIE-LAB	lab(40.68, 41.36, 38.99)
CIE-LCH	lch(40.68, 56.84, 43.31°)
OKLab	oklab(50.43% 0.1161 0.0847)
OKLCH	oklch(50.43% 0.144 36.1)
XYZ	xyz(17.7250, 11.6646, 2.7567)
Luminance	0.1166 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63E21 #2189A6

analogous

#A62147 #A63E21 #A68121

triadic

#A63E21 #21A63E #3E21A6

tetradic

#A63E21 #47A621 #2189A6 #8121A6

square

#A63E21 #47A621 #2189A6 #8121A6

split-complementary

#A63E21 #21A681 #2147A6

monochromatic

#40180D #732B17 #A63E21 #D6532F #E07D62

Accessibility & contrast

On white

6.30

#A63E21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#A63E21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63E21

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63E21	#FFFFFF	#000000	##FFFFFF
##A63E21	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511D

Deuteranopia (green-blind)

#75691D

Tritanopia (blue-blind)

#B72338

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63e21;
/* rgb */ color: rgb(166, 62, 33);
/* oklch */ color: oklch(50.4% 0.144 36.1);

Tailwind

colors: {
  custom: {
    50: '#c8785e',
    500: '#a63e21',
    950: '#000000',
  },
}

SCSS

$custom: #a63e21;
$custom-light: #c8785e;
$custom-dark: #000000;

JSON

{
  "hex": "#a63e21",
  "rgb": {
    "r": 166,
    "g": 62,
    "b": 33
  },
  "hsl": {
    "h": 13.083,
    "s": 66.834,
    "l": 39.02
  },
  "oklch": {
    "l": 0.50428,
    "c": 0.14372,
    "h": 36.1
  },
  "luminance": 0.11662
}

Semantic roles & 50–950 ramp

primary

#A63E21

secondary

#5EAEC5

accent

#C4EA3E

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63E21

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

Preview Lab → · Contrast checker → · Palette generator →