#3F180B#3F180B

#3F180B is a dark, moderate orange. Relative luminance 0.017; OKLCH L 26.6% C 0.065 H 38.7°. Best body text is #FFFFFF at 15.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F180B
RGB	rgb(63, 24, 11)
HSL	hsl(15, 70%, 15%)
HSV	hsv(15, 83%, 25%)
CMYK	cmyk(0%, 61.9%, 82.5%, 75.3%)
CIE-LAB	lab(14.03, 18.01, 16.70)
CIE-LCH	lch(14.03, 24.57, 42.84°)
OKLab	oklab(26.57% 0.0508 0.0407)
OKLCH	oklch(26.57% 0.065 38.7)
XYZ	xyz(2.4372, 1.7345, 0.5230)
Luminance	0.0173 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F180B #0B323F

analogous

#3F0B18 #3F180B #3F320B

triadic

#3F180B #0B3F18 #180B3F

tetradic

#3F180B #183F0B #0B323F #320B3F

square

#3F180B #183F0B #0B323F #320B3F

split-complementary

#3F180B #0B3F32 #0B183F

monochromatic

#1A0A05 #1A0A05 #3F180B #732C14 #A7401D

Accessibility & contrast

On white

15.59

#3F180B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#3F180B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F180B

15.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F180B	#FFFFFF	#000000	##FFFFFF
##3F180B	1.00	15.59	1.35	15.59
#FFFFFF	15.59	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231E0A

Deuteranopia (green-blind)

#2C270A

Tritanopia (blue-blind)

#461015

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #3f180b;
/* rgb */ color: rgb(63, 24, 11);
/* oklch */ color: oklch(26.6% 0.065 38.7);

Tailwind

colors: {
  custom: {
    50: '#78564b',
    500: '#3f180b',
    950: '#000000',
  },
}

SCSS

$custom: #3f180b;
$custom-light: #78564b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f180b",
  "rgb": {
    "r": 63,
    "g": 24,
    "b": 11
  },
  "hsl": {
    "h": 15,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.26565,
    "c": 0.06512,
    "h": 38.7
  },
  "luminance": 0.01734
}

Semantic roles & 50–950 ramp

primary

#3F180B

secondary

#2A677C

accent

#C0ED3B

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #3F180B

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

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