#40440B#40440B

#40440B is a dark, moderate yellow. Relative luminance 0.052; OKLCH L 37.1% C 0.076 H 113.6°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#40440B
RGB	rgb(64, 68, 11)
HSL	hsl(64, 72%, 15%)
HSV	hsv(64, 84%, 27%)
CMYK	cmyk(5.9%, 0%, 83.8%, 73.3%)
CIE-LAB	lab(27.43, -9.85, 31.57)
CIE-LCH	lch(27.43, 33.07, 107.33°)
OKLab	oklab(37.1% -0.0303 0.0695)
OKLCH	oklch(37.1% 0.076 113.6)
XYZ	xyz(4.2420, 5.2485, 1.1061)
Luminance	0.0525 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40440B #0F0B44

analogous

#442B0B #40440B #23440B

triadic

#40440B #0B4044 #440B40

tetradic

#40440B #0B442B #0F0B44 #440B23

square

#40440B #0B442B #0F0B44 #440B23

split-complementary

#40440B #0B2344 #2B0B44

monochromatic

#191A04 #191A04 #40440B #727914 #A3AD1C

Accessibility & contrast

On white

10.25

#40440B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#40440B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40440B

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40440B	#FFFFFF	#000000	##FFFFFF
##40440B	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4002

Deuteranopia (green-blind)

#4A4110

Tritanopia (blue-blind)

#453F39

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #40440b;
/* rgb */ color: rgb(64, 68, 11);
/* oklch */ color: oklch(37.1% 0.076 113.6);

Tailwind

colors: {
  custom: {
    50: '#77774f',
    500: '#40440b',
    950: '#000000',
  },
}

SCSS

$custom: #40440b;
$custom-light: #77774f;
$custom-dark: #000000;

JSON

{
  "hex": "#40440b",
  "rgb": {
    "r": 64,
    "g": 68,
    "b": 11
  },
  "hsl": {
    "h": 64.211,
    "s": 72.152,
    "l": 15.49
  },
  "oklch": {
    "l": 0.37103,
    "c": 0.07579,
    "h": 113.6
  },
  "luminance": 0.05248
}

Semantic roles & 50–950 ramp

primary

#40440B

secondary

#302A81

accent

#39EF46

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #40440B

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

Preview Lab → · Contrast checker → · Palette generator →