#40180D#40180D

#40180D is a dark, moderate red. Relative luminance 0.018; OKLCH L 26.8% C 0.066 H 36.3°. Best body text is #FFFFFF at 15.51:1 contrast (WCAG AA passes).

Color values

HEX	#40180D
RGB	rgb(64, 24, 13)
HSL	hsl(13, 66%, 15%)
HSV	hsv(13, 80%, 25%)
CMYK	cmyk(0%, 62.5%, 79.7%, 74.9%)
CIE-LAB	lab(14.25, 18.60, 16.12)
CIE-LCH	lch(14.25, 24.61, 40.90°)
OKLab	oklab(26.78% 0.053 0.0389)
OKLCH	oklch(26.78% 0.066 36.3)
XYZ	xyz(2.5139, 1.7726, 0.5905)
Luminance	0.0177 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40180D #0D3540

analogous

#400D1C #40180D #40310D

triadic

#40180D #0D4018 #180D40

tetradic

#40180D #1C400D #0D3540 #310D40

square

#40180D #1C400D #0D3540 #310D40

split-complementary

#40180D #0D4031 #0D1C40

monochromatic

#190A05 #190A05 #40180D #732B17 #A63E22

Accessibility & contrast

On white

15.51

#40180D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#40180D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40180D

15.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40180D	#FFFFFF	#000000	##FFFFFF
##40180D	1.00	15.51	1.35	15.51
#FFFFFF	15.51	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231F0C

Deuteranopia (green-blind)

#2D270C

Tritanopia (blue-blind)

#471016

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #40180d;
/* rgb */ color: rgb(64, 24, 13);
/* oklch */ color: oklch(26.8% 0.066 36.3);

Tailwind

colors: {
  custom: {
    50: '#79564c',
    500: '#40180d',
    950: '#000000',
  },
}

SCSS

$custom: #40180d;
$custom-light: #79564c;
$custom-dark: #000000;

JSON

{
  "hex": "#40180d",
  "rgb": {
    "r": 64,
    "g": 24,
    "b": 13
  },
  "hsl": {
    "h": 12.941,
    "s": 66.234,
    "l": 15.098
  },
  "oklch": {
    "l": 0.26777,
    "c": 0.06573,
    "h": 36.3
  },
  "luminance": 0.01772
}

Semantic roles & 50–950 ramp

primary

#40180D

secondary

#2D6B7C

accent

#C4E93F

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#0A0301

muted

#7C7877

Preview Lab

Preview with #40180D

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

Preview Lab → · Contrast checker → · Palette generator →