#661B28#661B28

#661B28 is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.9% C 0.107 H 14.7°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#661B28
RGB	rgb(102, 27, 40)
HSL	hsl(350, 58%, 25%)
HSV	hsv(350, 74%, 40%)
CMYK	cmyk(0%, 73.5%, 60.8%, 60%)
CIE-LAB	lab(22.87, 34.32, 10.91)
CIE-LCH	lch(22.87, 36.01, 17.64°)
OKLab	oklab(34.85% 0.1032 0.0271)
OKLCH	oklch(34.85% 0.107 14.7)
XYZ	xyz(6.2550, 3.7627, 2.4040)
Luminance	0.0376 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B28 #1B6659

analogous

#661B4D #661B28 #66331B

triadic

#661B28 #28661B #1B2866

tetradic

#661B28 #4D661B #1B6659 #331B66

square

#661B28 #4D661B #1B6659 #331B66

split-complementary

#661B28 #1B6633 #1B4D66

monochromatic

#180609 #360E15 #661B28 #96283B #C7354E

Accessibility & contrast

On white

11.98

#661B28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#661B28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B28

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B28	#FFFFFF	#000000	##FFFFFF
##661B28	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2D28

Deuteranopia (green-blind)

#413C26

Tritanopia (blue-blind)

#700A20

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661b28;
/* rgb */ color: rgb(102, 27, 40);
/* oklch */ color: oklch(34.9% 0.107 14.7);

Tailwind

colors: {
  custom: {
    50: '#975d61',
    500: '#661b28',
    950: '#000000',
  },
}

SCSS

$custom: #661b28;
$custom-light: #975d61;
$custom-dark: #000000;

JSON

{
  "hex": "#661b28",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 40
  },
  "hsl": {
    "h": 349.6,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34851,
    "c": 0.10667,
    "h": 14.7
  },
  "luminance": 0.03762
}

Semantic roles & 50–950 ramp

primary

#661B28

secondary

#419B8C

accent

#E1C746

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #661B28

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

Preview Lab → · Contrast checker → · Palette generator →