#64180E#64180E

#64180E is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.7% C 0.110 H 30.9°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#64180E
RGB	rgb(100, 24, 14)
HSL	hsl(7, 75%, 22%)
HSV	hsv(7, 86%, 39%)
CMYK	cmyk(0%, 76%, 86%, 60.8%)
CIE-LAB	lab(21.56, 33.37, 26.12)
CIE-LCH	lch(21.56, 42.38, 38.05°)
OKLab	oklab(33.66% 0.0947 0.0566)
OKLCH	oklch(33.66% 0.11 30.9)
XYZ	xyz(5.6621, 3.3952, 0.7726)
Luminance	0.0339 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64180E #0E5A64

analogous

#640E2F #64180E #64430E

triadic

#64180E #0E6418 #180E64

tetradic

#64180E #2F640E #0E5A64 #430E64

square

#64180E #2F640E #0E5A64 #430E64

split-complementary

#64180E #0E6443 #0E2F64

monochromatic

#1B0604 #2E0B06 #64180E #9A2516 #CF321D

Accessibility & contrast

On white

12.51

#64180E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#64180E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64180E

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64180E	#FFFFFF	#000000	##FFFFFF
##64180E	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F290C

Deuteranopia (green-blind)

#423A0A

Tritanopia (blue-blind)

#6F0016

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #64180e;
/* rgb */ color: rgb(100, 24, 14);
/* oklch */ color: oklch(33.7% 0.110 30.9);

Tailwind

colors: {
  custom: {
    50: '#975b4d',
    500: '#64180e',
    950: '#000000',
  },
}

SCSS

$custom: #64180e;
$custom-light: #975b4d;
$custom-dark: #000000;

JSON

{
  "hex": "#64180e",
  "rgb": {
    "r": 100,
    "g": 24,
    "b": 14
  },
  "hsl": {
    "h": 6.977,
    "s": 75.439,
    "l": 22.353
  },
  "oklch": {
    "l": 0.33659,
    "c": 0.11029,
    "h": 30.9
  },
  "luminance": 0.03394
}

Semantic roles & 50–950 ramp

primary

#64180E

secondary

#31919D

accent

#DCF236

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0401

muted

#7F7977

Preview Lab

Preview with #64180E

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

Preview Lab → · Contrast checker → · Palette generator →