#661F18#661F18

#661F18 is a dark, moderate red. Relative luminance 0.039; OKLCH L 35.0% C 0.104 H 29.0°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#661F18
RGB	rgb(102, 31, 24)
HSL	hsl(5, 62%, 25%)
HSV	hsv(5, 76%, 40%)
CMYK	cmyk(0%, 69.6%, 76.5%, 60%)
CIE-LAB	lab(23.24, 31.42, 22.09)
CIE-LCH	lch(23.24, 38.41, 35.10°)
OKLab	oklab(35.03% 0.0906 0.0502)
OKLCH	oklch(35.03% 0.104 29)
XYZ	xyz(6.1350, 3.8716, 1.2882)
Luminance	0.0387 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661F18 #185F66

analogous

#661838 #661F18 #664618

triadic

#661F18 #18661F #1F1866

tetradic

#661F18 #386618 #185F66 #461866

square

#661F18 #386618 #185F66 #461866

split-complementary

#661F18 #186646 #183866

monochromatic

#190806 #34100C #661F18 #982E24 #C93D2F

Accessibility & contrast

On white

11.84

#661F18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#661F18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661F18

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661F18	#FFFFFF	#000000	##FFFFFF
##661F18	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#332E17

Deuteranopia (green-blind)

#443D16

Tritanopia (blue-blind)

#710C1E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661f18;
/* rgb */ color: rgb(102, 31, 24);
/* oklch */ color: oklch(35.0% 0.104 29.0);

Tailwind

colors: {
  custom: {
    50: '#985f55',
    500: '#661f18',
    950: '#000000',
  },
}

SCSS

$custom: #661f18;
$custom-light: #985f55;
$custom-dark: #000000;

JSON

{
  "hex": "#661f18",
  "rgb": {
    "r": 102,
    "g": 31,
    "b": 24
  },
  "hsl": {
    "h": 5.385,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35032,
    "c": 0.10353,
    "h": 29
  },
  "luminance": 0.03871
}

Semantic roles & 50–950 ramp

primary

#661F18

secondary

#3E949C

accent

#D6E543

background

#F9F5F4

surface

#F2E9E8

border

#CCC5C4

text

#0F0503

muted

#7E7978

Preview Lab

Preview with #661F18

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

Preview Lab → · Contrast checker → · Palette generator →