#661E1F#661E1F

#661E1F is a dark, moderate red. Relative luminance 0.039; OKLCH L 35.0% C 0.103 H 23.5°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#661E1F
RGB	rgb(102, 30, 31)
HSL	hsl(359, 55%, 26%)
HSV	hsv(359, 71%, 40%)
CMYK	cmyk(0%, 70.6%, 69.6%, 60%)
CIE-LAB	lab(23.18, 32.31, 17.43)
CIE-LCH	lch(23.18, 36.71, 28.35°)
OKLab	oklab(35.02% 0.0949 0.0412)
OKLCH	oklch(35.02% 0.103 23.5)
XYZ	xyz(6.1917, 3.8531, 1.7137)
Luminance	0.0385 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661E1F #1E6665

analogous

#661E43 #661E1F #66411E

triadic

#661E1F #1F661E #1E1F66

tetradic

#661E1F #43661E #1E6665 #411E66

square

#661E1F #43661E #1E6665 #411E66

split-complementary

#661E1F #1E6641 #1E4366

monochromatic

#180707 #371011 #661E1F #952C2D #C53A3C

Accessibility & contrast

On white

11.86

#661E1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#661E1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661E1F

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661E1F	#FFFFFF	#000000	##FFFFFF
##661E1F	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312E1E

Deuteranopia (green-blind)

#433D1D

Tritanopia (blue-blind)

#700C1F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661e1f;
/* rgb */ color: rgb(102, 30, 31);
/* oklch */ color: oklch(35.0% 0.103 23.5);

Tailwind

colors: {
  custom: {
    50: '#975e5a',
    500: '#661e1f',
    950: '#000000',
  },
}

SCSS

$custom: #661e1f;
$custom-light: #975e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#661e1f",
  "rgb": {
    "r": 102,
    "g": 30,
    "b": 31
  },
  "hsl": {
    "h": 359.167,
    "s": 54.545,
    "l": 25.882
  },
  "oklch": {
    "l": 0.35021,
    "c": 0.10348,
    "h": 23.5
  },
  "luminance": 0.03852
}

Semantic roles & 50–950 ramp

primary

#661E1F

secondary

#459B99

accent

#DEDC4A

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0503

muted

#7E7978

Preview Lab

Preview with #661E1F

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

Preview Lab → · Contrast checker → · Palette generator →