#661B2A#661B2A

#661B2A is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.9% C 0.107 H 13.0°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#661B2A
RGB	rgb(102, 27, 42)
HSL	hsl(348, 58%, 25%)
HSV	hsv(348, 74%, 40%)
CMYK	cmyk(0%, 73.5%, 58.8%, 60%)
CIE-LAB	lab(22.92, 34.49, 9.60)
CIE-LCH	lch(22.92, 35.80, 15.55°)
OKLab	oklab(34.9% 0.1041 0.024)
OKLCH	oklch(34.9% 0.107 13)
XYZ	xyz(6.2899, 3.7767, 2.5878)
Luminance	0.0378 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B2A #1B6657

analogous

#661B4F #661B2A #66311B

triadic

#661B2A #2A661B #1B2A66

tetradic

#661B2A #4F661B #1B6657 #311B66

square

#661B2A #4F661B #1B6657 #311B66

split-complementary

#661B2A #1B6631 #1B4F66

monochromatic

#18060A #360E16 #661B2A #96283E #C73552

Accessibility & contrast

On white

11.96

#661B2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#661B2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B2A

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B2A	#FFFFFF	#000000	##FFFFFF
##661B2A	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)

#2E2D2A

Deuteranopia (green-blind)

#413C28

Tritanopia (blue-blind)

#700B21

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661b2a;
/* rgb */ color: rgb(102, 27, 42);
/* oklch */ color: oklch(34.9% 0.107 13.0);

Tailwind

colors: {
  custom: {
    50: '#965d63',
    500: '#661b2a',
    950: '#000000',
  },
}

SCSS

$custom: #661b2a;
$custom-light: #965d63;
$custom-dark: #000000;

JSON

{
  "hex": "#661b2a",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 42
  },
  "hsl": {
    "h": 348,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34902,
    "c": 0.1068,
    "h": 13
  },
  "luminance": 0.03776
}

Semantic roles & 50–950 ramp

primary

#661B2A

secondary

#419B89

accent

#E1C246

background

#F9F5F5

surface

#F2E9EA

border

#CCC5C6

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #661B2A

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

Preview Lab → · Contrast checker → · Palette generator →