#64381B#64381B

#64381B is a dark, moderate orange. Relative luminance 0.056; OKLCH L 38.9% C 0.075 H 52.1°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#64381B
RGB	rgb(100, 56, 27)
HSL	hsl(24, 57%, 25%)
HSV	hsv(24, 73%, 39%)
CMYK	cmyk(0%, 44%, 73%, 60.8%)
CIE-LAB	lab(28.43, 16.77, 26.04)
CIE-LCH	lch(28.43, 30.97, 57.22°)
OKLab	oklab(38.92% 0.0463 0.0595)
OKLCH	oklch(38.92% 0.075 52.1)
XYZ	xyz(6.8681, 5.6175, 1.7593)
Luminance	0.0562 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64381B #1B4764

analogous

#641B22 #64381B #645D1B

triadic

#64381B #1B6438 #381B64

tetradic

#64381B #22641B #1B4764 #5D1B64

square

#64381B #22641B #1B4764 #5D1B64

split-complementary

#64381B #1B645D #1B2264

monochromatic

#180D07 #341D0E #64381B #945328 #C46E35

Accessibility & contrast

On white

9.89

#64381B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#64381B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64381B

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64381B	#FFFFFF	#000000	##FFFFFF
##64381B	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#453D18

Deuteranopia (green-blind)

#4F471B

Tritanopia (blue-blind)

#6E2F31

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #64381b;
/* rgb */ color: rgb(100, 56, 27);
/* oklch */ color: oklch(38.9% 0.075 52.1);

Tailwind

colors: {
  custom: {
    50: '#946f58',
    500: '#64381b',
    950: '#000000',
  },
}

SCSS

$custom: #64381b;
$custom-light: #946f58;
$custom-dark: #000000;

JSON

{
  "hex": "#64381b",
  "rgb": {
    "r": 100,
    "g": 56,
    "b": 27
  },
  "hsl": {
    "h": 23.836,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.38922,
    "c": 0.07538,
    "h": 52.1
  },
  "luminance": 0.05617
}

Semantic roles & 50–950 ramp

primary

#64381B

secondary

#417699

accent

#A4E147

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #64381B

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

Preview Lab → · Contrast checker → · Palette generator →