#64311B#64311B

#64311B is a dark, moderate orange. Relative luminance 0.050; OKLCH L 37.6% C 0.081 H 43.0°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#64311B
RGB	rgb(100, 49, 27)
HSL	hsl(18, 57%, 25%)
HSV	hsv(18, 73%, 39%)
CMYK	cmyk(0%, 51%, 73%, 60.8%)
CIE-LAB	lab(26.69, 20.99, 24.08)
CIE-LCH	lch(26.69, 31.94, 48.92°)
OKLab	oklab(37.59% 0.0591 0.0552)
OKLCH	oklch(37.59% 0.081 43)
XYZ	xyz(6.5522, 4.9858, 1.6540)
Luminance	0.0498 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64311B #1B4E64

analogous

#641B2A #64311B #64551B

triadic

#64311B #1B6431 #311B64

tetradic

#64311B #2A641B #1B4E64 #551B64

square

#64311B #2A641B #1B4E64 #551B64

split-complementary

#64311B #1B6455 #1B2A64

monochromatic

#180C07 #34190E #64311B #944928 #C46035

Accessibility & contrast

On white

10.52

#64311B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#64311B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64311B

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64311B	#FFFFFF	#000000	##FFFFFF
##64311B	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3819

Deuteranopia (green-blind)

#4B431A

Tritanopia (blue-blind)

#6E272C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #64311b;
/* rgb */ color: rgb(100, 49, 27);
/* oklch */ color: oklch(37.6% 0.081 43.0);

Tailwind

colors: {
  custom: {
    50: '#956a58',
    500: '#64311b',
    950: '#000000',
  },
}

SCSS

$custom: #64311b;
$custom-light: #956a58;
$custom-dark: #000000;

JSON

{
  "hex": "#64311b",
  "rgb": {
    "r": 100,
    "g": 49,
    "b": 27
  },
  "hsl": {
    "h": 18.082,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.37592,
    "c": 0.08092,
    "h": 43
  },
  "luminance": 0.04985
}

Semantic roles & 50–950 ramp

primary

#64311B

secondary

#417F99

accent

#B2E147

background

#F9F6F5

surface

#F2EBE9

border

#CCC6C5

text

#0E0603

muted

#7E7A78

Preview Lab

Preview with #64311B

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

Preview Lab → · Contrast checker → · Palette generator →