#661F10#661F10

#661F10 is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.9% C 0.105 H 33.6°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#661F10
RGB	rgb(102, 31, 16)
HSL	hsl(10, 73%, 23%)
HSV	hsv(10, 84%, 40%)
CMYK	cmyk(0%, 69.6%, 84.3%, 60%)
CIE-LAB	lab(23.15, 31.06, 26.85)
CIE-LCH	lch(23.15, 41.06, 40.85°)
OKLab	oklab(34.93% 0.0877 0.0583)
OKLCH	oklch(34.93% 0.105 33.6)
XYZ	xyz(6.0637, 3.8431, 0.9126)
Luminance	0.0384 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661F10 #105766

analogous

#66102C #661F10 #664A10

triadic

#661F10 #10661F #1F1066

tetradic

#661F10 #2C6610 #105766 #4A1066

square

#661F10 #2C6610 #105766 #4A1066

split-complementary

#661F10 #10664A #102C66

monochromatic

#1A0804 #310F08 #661F10 #9B2F18 #D03F21

Accessibility & contrast

On white

11.88

#661F10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#661F10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661F10

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661F10	#FFFFFF	#000000	##FFFFFF
##661F10	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#332D0E

Deuteranopia (green-blind)

#453D0D

Tritanopia (blue-blind)

#710A1C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661f10;
/* rgb */ color: rgb(102, 31, 16);
/* oklch */ color: oklch(34.9% 0.105 33.6);

Tailwind

colors: {
  custom: {
    50: '#985f4f',
    500: '#661f10',
    950: '#000000',
  },
}

SCSS

$custom: #661f10;
$custom-light: #985f4f;
$custom-dark: #000000;

JSON

{
  "hex": "#661f10",
  "rgb": {
    "r": 102,
    "g": 31,
    "b": 16
  },
  "hsl": {
    "h": 10.465,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.34929,
    "c": 0.10527,
    "h": 33.6
  },
  "luminance": 0.03842
}

Semantic roles & 50–950 ramp

primary

#661F10

secondary

#338C9E

accent

#D0F038

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0502

muted

#7F7978

Preview Lab

Preview with #661F10

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

Preview Lab → · Contrast checker → · Palette generator →