#40380B#40380B

#40380B is a dark, moderate yellow. Relative luminance 0.039; OKLCH L 34.0% C 0.062 H 98.8°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#40380B
RGB	rgb(64, 56, 11)
HSL	hsl(51, 71%, 15%)
HSV	hsv(51, 83%, 25%)
CMYK	cmyk(0%, 12.5%, 82.8%, 74.9%)
CIE-LAB	lab(23.48, -2.43, 27.78)
CIE-LCH	lch(23.48, 27.88, 95.00°)
OKLab	oklab(33.95% -0.0095 0.0615)
OKLCH	oklch(33.95% 0.062 98.8)
XYZ	xyz(3.5891, 3.9427, 0.8885)
Luminance	0.0394 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40380B #0B1340

analogous

#401D0B #40380B #2E400B

triadic

#40380B #0B4038 #380B40

tetradic

#40380B #0B401D #0B1340 #400B2E

square

#40380B #0B401D #0B1340 #400B2E

split-complementary

#40380B #0B2E40 #1D0B40

monochromatic

#1A1704 #1A1704 #40380B #746614 #A8931D

Accessibility & contrast

On white

11.74

#40380B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#40380B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40380B

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40380B	#FFFFFF	#000000	##FFFFFF
##40380B	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3605

Deuteranopia (green-blind)

#41390E

Tritanopia (blue-blind)

#46332F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #40380b;
/* rgb */ color: rgb(64, 56, 11);
/* oklch */ color: oklch(34.0% 0.062 98.8);

Tailwind

colors: {
  custom: {
    50: '#776e4d',
    500: '#40380b',
    950: '#000000',
  },
}

SCSS

$custom: #40380b;
$custom-light: #776e4d;
$custom-dark: #000000;

JSON

{
  "hex": "#40380b",
  "rgb": {
    "r": 64,
    "g": 56,
    "b": 11
  },
  "hsl": {
    "h": 50.943,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.33954,
    "c": 0.06222,
    "h": 98.8
  },
  "luminance": 0.03942
}

Semantic roles & 50–950 ramp

primary

#40380B

secondary

#2A377D

accent

#55ED3A

background

#F7F6F4

surface

#EDEBE7

border

#C8C6C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #40380B

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

Preview Lab → · Contrast checker → · Palette generator →