#661B24#661B24

#661B24 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.8% C 0.107 H 18.0°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#661B24
RGB	rgb(102, 27, 36)
HSL	hsl(353, 58%, 25%)
HSV	hsv(353, 74%, 40%)
CMYK	cmyk(0%, 73.5%, 64.7%, 60%)
CIE-LAB	lab(22.78, 34.01, 13.54)
CIE-LCH	lch(22.78, 36.60, 21.71°)
OKLab	oklab(34.76% 0.1014 0.0329)
OKLCH	oklch(34.76% 0.107 18)
XYZ	xyz(6.1905, 3.7369, 2.0640)
Luminance	0.0374 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B24 #1B665D

analogous

#661B49 #661B24 #66371B

triadic

#661B24 #24661B #1B2466

tetradic

#661B24 #49661B #1B665D #371B66

square

#661B24 #49661B #1B665D #371B66

split-complementary

#661B24 #1B6637 #1B4966

monochromatic

#180609 #360E13 #661B24 #962835 #C73546

Accessibility & contrast

On white

12.02

#661B24 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#661B24 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B24

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B24	#FFFFFF	#000000	##FFFFFF
##661B24	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2C24

Deuteranopia (green-blind)

#423C22

Tritanopia (blue-blind)

#70081F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661b24;
/* rgb */ color: rgb(102, 27, 36);
/* oklch */ color: oklch(34.8% 0.107 18.0);

Tailwind

colors: {
  custom: {
    50: '#975d5e',
    500: '#661b24',
    950: '#000000',
  },
}

SCSS

$custom: #661b24;
$custom-light: #975d5e;
$custom-dark: #000000;

JSON

{
  "hex": "#661b24",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 36
  },
  "hsl": {
    "h": 352.8,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34755,
    "c": 0.10661,
    "h": 18
  },
  "luminance": 0.03736
}

Semantic roles & 50–950 ramp

primary

#661B24

secondary

#419B91

accent

#E1CF46

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #661B24

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

Preview Lab → · Contrast checker → · Palette generator →