#A63C21#A63C21

#A63C21 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.2% C 0.146 H 35.2°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#A63C21
RGB	rgb(166, 60, 33)
HSL	hsl(12, 67%, 39%)
HSV	hsv(12, 80%, 65%)
CMYK	cmyk(0%, 63.9%, 80.1%, 34.9%)
CIE-LAB	lab(40.33, 42.29, 38.65)
CIE-LCH	lch(40.33, 57.29, 42.43°)
OKLab	oklab(50.17% 0.1189 0.084)
OKLCH	oklch(50.17% 0.146 35.2)
XYZ	xyz(17.6182, 11.4510, 2.7211)
Luminance	0.1145 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C21 #218BA6

analogous

#A62149 #A63C21 #A67F21

triadic

#A63C21 #21A63C #3C21A6

tetradic

#A63C21 #49A621 #218BA6 #7F21A6

square

#A63C21 #49A621 #218BA6 #7F21A6

split-complementary

#A63C21 #21A67F #2149A6

monochromatic

#40170D #732A17 #A63C21 #D6512F #E07B62

Accessibility & contrast

On white

6.38

#A63C21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#A63C21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C21

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C21	#FFFFFF	#000000	##FFFFFF
##A63C21	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A501D

Deuteranopia (green-blind)

#74681D

Tritanopia (blue-blind)

#B72037

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c21;
/* rgb */ color: rgb(166, 60, 33);
/* oklch */ color: oklch(50.2% 0.146 35.2);

Tailwind

colors: {
  custom: {
    50: '#c8765e',
    500: '#a63c21',
    950: '#000000',
  },
}

SCSS

$custom: #a63c21;
$custom-light: #c8765e;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c21",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 33
  },
  "hsl": {
    "h": 12.18,
    "s": 66.834,
    "l": 39.02
  },
  "oklch": {
    "l": 0.50166,
    "c": 0.14561,
    "h": 35.2
  },
  "luminance": 0.11449
}

Semantic roles & 50–950 ramp

primary

#A63C21

secondary

#5EB0C5

accent

#C7EA3E

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63C21

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

Preview Lab → · Contrast checker → · Palette generator →