#A63C23#A63C23

#A63C23 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.2% C 0.145 H 34.6°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#A63C23
RGB	rgb(166, 60, 35)
HSL	hsl(11, 65%, 39%)
HSV	hsv(11, 79%, 65%)
CMYK	cmyk(0%, 63.9%, 78.9%, 34.9%)
CIE-LAB	lab(40.35, 42.36, 37.61)
CIE-LCH	lch(40.35, 56.65, 41.60°)
OKLab	oklab(50.19% 0.1195 0.0823)
OKLCH	oklch(50.19% 0.145 34.6)
XYZ	xyz(17.6471, 11.4626, 2.8730)
Luminance	0.1146 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C23 #238DA6

analogous

#A6234C #A63C23 #A67D23

triadic

#A63C23 #23A63C #3C23A6

tetradic

#A63C23 #4CA623 #238DA6 #7D23A6

square

#A63C23 #4CA623 #238DA6 #7D23A6

split-complementary

#A63C23 #23A67D #234CA6

monochromatic

#41170E #732A18 #A63C23 #D45132 #DF7C65

Accessibility & contrast

On white

6.38

#A63C23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#A63C23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C23

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C23	#FFFFFF	#000000	##FFFFFF
##A63C23	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)

#5A501F

Deuteranopia (green-blind)

#74681F

Tritanopia (blue-blind)

#B72037

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c23;
/* rgb */ color: rgb(166, 60, 35);
/* oklch */ color: oklch(50.2% 0.145 34.6);

Tailwind

colors: {
  custom: {
    50: '#c87660',
    500: '#a63c23',
    950: '#000000',
  },
}

SCSS

$custom: #a63c23;
$custom-light: #c87660;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c23",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 35
  },
  "hsl": {
    "h": 11.45,
    "s": 65.174,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50186,
    "c": 0.14515,
    "h": 34.6
  },
  "luminance": 0.1146
}

Semantic roles & 50–950 ramp

primary

#A63C23

secondary

#61B1C4

accent

#C8E840

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150905

muted

#837B79

Preview Lab

Preview with #A63C23

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

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