#64371B#64371B

#64371B is a dark, moderate orange. Relative luminance 0.055; OKLCH L 38.7% C 0.076 H 50.7°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#64371B
RGB	rgb(100, 55, 27)
HSL	hsl(23, 57%, 25%)
HSV	hsv(23, 73%, 39%)
CMYK	cmyk(0%, 45%, 73%, 60.8%)
CIE-LAB	lab(28.17, 17.38, 25.75)
CIE-LCH	lch(28.17, 31.06, 55.99°)
OKLab	oklab(38.73% 0.0482 0.0588)
OKLCH	oklch(38.73% 0.076 50.7)
XYZ	xyz(6.8201, 5.5216, 1.7433)
Luminance	0.0552 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64371B #1B4864

analogous

#641B23 #64371B #645C1B

triadic

#64371B #1B6437 #371B64

tetradic

#64371B #23641B #1B4864 #5C1B64

square

#64371B #23641B #1B4864 #5C1B64

split-complementary

#64371B #1B645C #1B2364

monochromatic

#180D07 #341C0E #64371B #945228 #C46C35

Accessibility & contrast

On white

9.98

#64371B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#64371B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64371B

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64371B	#FFFFFF	#000000	##FFFFFF
##64371B	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#443C18

Deuteranopia (green-blind)

#4F461B

Tritanopia (blue-blind)

#6E2E31

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #64371b;
/* rgb */ color: rgb(100, 55, 27);
/* oklch */ color: oklch(38.7% 0.076 50.7);

Tailwind

colors: {
  custom: {
    50: '#946e58',
    500: '#64371b',
    950: '#000000',
  },
}

SCSS

$custom: #64371b;
$custom-light: #946e58;
$custom-dark: #000000;

JSON

{
  "hex": "#64371b",
  "rgb": {
    "r": 100,
    "g": 55,
    "b": 27
  },
  "hsl": {
    "h": 23.014,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.38726,
    "c": 0.07605,
    "h": 50.7
  },
  "luminance": 0.05521
}

Semantic roles & 50–950 ramp

primary

#64371B

secondary

#417899

accent

#A6E147

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #64371B

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

Preview Lab → · Contrast checker → · Palette generator →