#661B25#661B25

#661B25 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.8% C 0.107 H 17.2°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#661B25
RGB	rgb(102, 27, 37)
HSL	hsl(352, 58%, 25%)
HSV	hsv(352, 74%, 40%)
CMYK	cmyk(0%, 73.5%, 63.7%, 60%)
CIE-LAB	lab(22.80, 34.08, 12.88)
CIE-LCH	lch(22.80, 36.44, 20.70°)
OKLab	oklab(34.78% 0.1019 0.0315)
OKLCH	oklch(34.78% 0.107 17.2)
XYZ	xyz(6.2060, 3.7431, 2.1456)
Luminance	0.0374 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B25 #1B665C

analogous

#661B4A #661B25 #66361B

triadic

#661B25 #25661B #1B2566

tetradic

#661B25 #4A661B #1B665C #361B66

square

#661B25 #4A661B #1B665C #361B66

split-complementary

#661B25 #1B6636 #1B4A66

monochromatic

#180609 #360E13 #661B25 #962837 #C73548

Accessibility & contrast

On white

12.01

#661B25 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#661B25 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B25

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B25	#FFFFFF	#000000	##FFFFFF
##661B25	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2C25

Deuteranopia (green-blind)

#423C23

Tritanopia (blue-blind)

#70081F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661b25;
/* rgb */ color: rgb(102, 27, 37);
/* oklch */ color: oklch(34.8% 0.107 17.2);

Tailwind

colors: {
  custom: {
    50: '#975d5f',
    500: '#661b25',
    950: '#000000',
  },
}

SCSS

$custom: #661b25;
$custom-light: #975d5f;
$custom-dark: #000000;

JSON

{
  "hex": "#661b25",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 37
  },
  "hsl": {
    "h": 352,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34778,
    "c": 0.1066,
    "h": 17.2
  },
  "luminance": 0.03742
}

Semantic roles & 50–950 ramp

primary

#661B25

secondary

#419B8F

accent

#E1CD46

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #661B25

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

Preview Lab → · Contrast checker → · Palette generator →