#641B10#641B10

#641B10 is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.0% C 0.107 H 31.4°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#641B10
RGB	rgb(100, 27, 16)
HSL	hsl(8, 72%, 23%)
HSV	hsv(8, 84%, 39%)
CMYK	cmyk(0%, 73%, 84%, 60.8%)
CIE-LAB	lab(22.06, 32.14, 25.60)
CIE-LCH	lch(22.06, 41.09, 38.53°)
OKLab	oklab(34.04% 0.0913 0.0558)
OKLCH	oklch(34.04% 0.107 31.4)
XYZ	xyz(5.7416, 3.5315, 0.8694)
Luminance	0.0353 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B10 #105964

analogous

#64102F #641B10 #644510

triadic

#641B10 #10641B #1B1064

tetradic

#641B10 #2F6410 #105964 #451064

square

#641B10 #2F6410 #105964 #451064

split-complementary

#641B10 #106445 #102F64

monochromatic

#1A0704 #2F0D08 #641B10 #992918 #CE3721

Accessibility & contrast

On white

12.31

#641B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#641B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B10

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B10	#FFFFFF	#000000	##FFFFFF
##641B10	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302B0E

Deuteranopia (green-blind)

#423B0D

Tritanopia (blue-blind)

#6F0319

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b10;
/* rgb */ color: rgb(100, 27, 16);
/* oklch */ color: oklch(34.0% 0.107 31.4);

Tailwind

colors: {
  custom: {
    50: '#975c4f',
    500: '#641b10',
    950: '#000000',
  },
}

SCSS

$custom: #641b10;
$custom-light: #975c4f;
$custom-dark: #000000;

JSON

{
  "hex": "#641b10",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 7.857,
    "s": 72.414,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34037,
    "c": 0.10698,
    "h": 31.4
  },
  "luminance": 0.03531
}

Semantic roles & 50–950 ramp

primary

#641B10

secondary

#338F9D

accent

#D7EF39

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #641B10

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

Preview Lab → · Contrast checker → · Palette generator →