#661C23#661C23

#661C23 is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.9% C 0.105 H 19.3°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#661C23
RGB	rgb(102, 28, 35)
HSL	hsl(354, 57%, 25%)
HSV	hsv(354, 73%, 40%)
CMYK	cmyk(0%, 72.5%, 65.7%, 60%)
CIE-LAB	lab(22.92, 33.49, 14.40)
CIE-LCH	lch(22.92, 36.46, 23.27°)
OKLab	oklab(34.85% 0.0996 0.0348)
OKLCH	oklch(34.85% 0.105 19.3)
XYZ	xyz(6.1987, 3.7775, 1.9925)
Luminance	0.0378 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661C23 #1C665F

analogous

#661C48 #661C23 #663A1C

triadic

#661C23 #23661C #1C2366

tetradic

#661C23 #48661C #1C665F #3A1C66

square

#661C23 #48661C #1C665F #3A1C66

split-complementary

#661C23 #1C663A #1C4866

monochromatic

#180708 #360F13 #661C23 #962933 #C63644

Accessibility & contrast

On white

11.96

#661C23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#661C23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661C23

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661C23	#FFFFFF	#000000	##FFFFFF
##661C23	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302D23

Deuteranopia (green-blind)

#423C21

Tritanopia (blue-blind)

#70091F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661c23;
/* rgb */ color: rgb(102, 28, 35);
/* oklch */ color: oklch(34.9% 0.105 19.3);

Tailwind

colors: {
  custom: {
    50: '#975e5d',
    500: '#661c23',
    950: '#000000',
  },
}

SCSS

$custom: #661c23;
$custom-light: #975e5d;
$custom-dark: #000000;

JSON

{
  "hex": "#661c23",
  "rgb": {
    "r": 102,
    "g": 28,
    "b": 35
  },
  "hsl": {
    "h": 354.324,
    "s": 56.923,
    "l": 25.49
  },
  "oklch": {
    "l": 0.34853,
    "c": 0.10547,
    "h": 19.3
  },
  "luminance": 0.03777
}

Semantic roles & 50–950 ramp

primary

#661C23

secondary

#439B93

accent

#E0D248

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #661C23

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

Preview Lab → · Contrast checker → · Palette generator →