#40390C#40390C

#40390C is a dark, moderate yellow. Relative luminance 0.040; OKLCH L 34.2% C 0.062 H 100.2°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#40390C
RGB	rgb(64, 57, 12)
HSL	hsl(52, 68%, 15%)
HSV	hsv(52, 81%, 25%)
CMYK	cmyk(0%, 10.9%, 81.2%, 74.9%)
CIE-LAB	lab(23.81, -3.01, 27.67)
CIE-LCH	lch(23.81, 27.83, 96.21°)
OKLab	oklab(34.22% -0.0111 0.0614)
OKLCH	oklch(34.22% 0.062 100.2)
XYZ	xyz(3.6440, 4.0430, 0.9362)
Luminance	0.0404 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40390C #0C1340

analogous

#401F0C #40390C #2D400C

triadic

#40390C #0C4039 #390C40

tetradic

#40390C #0C401F #0C1340 #400C2D

square

#40390C #0C401F #0C1340 #400C2D

split-complementary

#40390C #0C2D40 #1F0C40

monochromatic

#1A1705 #1A1705 #40390C #746716 #A7951F

Accessibility & contrast

On white

11.61

#40390C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#40390C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40390C

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40390C	#FFFFFF	#000000	##FFFFFF
##40390C	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3706

Deuteranopia (green-blind)

#413A0F

Tritanopia (blue-blind)

#463430

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #40390c;
/* rgb */ color: rgb(64, 57, 12);
/* oklch */ color: oklch(34.2% 0.062 100.2);

Tailwind

colors: {
  custom: {
    50: '#776f4e',
    500: '#40390c',
    950: '#000000',
  },
}

SCSS

$custom: #40390c;
$custom-light: #776f4e;
$custom-dark: #000000;

JSON

{
  "hex": "#40390c",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 12
  },
  "hsl": {
    "h": 51.923,
    "s": 68.421,
    "l": 14.902
  },
  "oklch": {
    "l": 0.34219,
    "c": 0.06241,
    "h": 100.2
  },
  "luminance": 0.04043
}

Semantic roles & 50–950 ramp

primary

#40390C

secondary

#2C377C

accent

#54EB3D

background

#F7F6F4

surface

#EDECE7

border

#C8C7C3

text

#090702

muted

#7B7A78

Preview Lab

Preview with #40390C

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

Preview Lab → · Contrast checker → · Palette generator →