#661B15#661B15

#661B15 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.5% C 0.108 H 28.6°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#661B15
RGB	rgb(102, 27, 21)
HSL	hsl(4, 66%, 24%)
HSV	hsv(4, 79%, 40%)
CMYK	cmyk(0%, 73.5%, 79.4%, 60%)
CIE-LAB	lab(22.53, 33.10, 23.19)
CIE-LCH	lch(22.53, 40.42, 35.01°)
OKLab	oklab(34.48% 0.0951 0.0518)
OKLCH	oklch(34.48% 0.108 28.6)
XYZ	xyz(6.0075, 3.6637, 1.1002)
Luminance	0.0366 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B15 #156066

analogous

#661538 #661B15 #664415

triadic

#661B15 #15661B #1B1566

tetradic

#661B15 #386615 #156066 #441566

square

#661B15 #386615 #156066 #441566

split-complementary

#661B15 #156644 #153866

monochromatic

#190705 #330E0B #661B15 #99281F #CC362A

Accessibility & contrast

On white

12.12

#661B15 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#661B15 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B15

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B15	#FFFFFF	#000000	##FFFFFF
##661B15	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B14

Deuteranopia (green-blind)

#433C12

Tritanopia (blue-blind)

#71031A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661b15;
/* rgb */ color: rgb(102, 27, 21);
/* oklch */ color: oklch(34.5% 0.108 28.6);

Tailwind

colors: {
  custom: {
    50: '#985d52',
    500: '#661b15',
    950: '#000000',
  },
}

SCSS

$custom: #661b15;
$custom-light: #985d52;
$custom-dark: #000000;

JSON

{
  "hex": "#661b15",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 21
  },
  "hsl": {
    "h": 4.444,
    "s": 65.854,
    "l": 24.118
  },
  "oklch": {
    "l": 0.34483,
    "c": 0.10835,
    "h": 28.6
  },
  "luminance": 0.03663
}

Semantic roles & 50–950 ramp

primary

#661B15

secondary

#3A969D

accent

#DCE93F

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #661B15

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

Preview Lab → · Contrast checker → · Palette generator →