#40390D#40390D

#40390D is a dark, moderate yellow. Relative luminance 0.040; OKLCH L 34.2% C 0.062 H 100.1°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#40390D
RGB	rgb(64, 57, 13)
HSL	hsl(52, 66%, 15%)
HSV	hsv(52, 80%, 25%)
CMYK	cmyk(0%, 10.9%, 79.7%, 74.9%)
CIE-LAB	lab(23.82, -2.95, 27.21)
CIE-LCH	lch(23.82, 27.37, 96.19°)
OKLab	oklab(34.23% -0.0108 0.0607)
OKLCH	oklch(34.23% 0.062 100.1)
XYZ	xyz(3.6503, 4.0455, 0.9693)
Luminance	0.0404 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40390D #0D1440

analogous

#40200D #40390D #2D400D

triadic

#40390D #0D4039 #390D40

tetradic

#40390D #0D4020 #0D1440 #400D2D

square

#40390D #0D4020 #0D1440 #400D2D

split-complementary

#40390D #0D2D40 #200D40

monochromatic

#191705 #191705 #40390D #736617 #A69422

Accessibility & contrast

On white

11.61

#40390D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#40390D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40390D

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40390D	#FFFFFF	#000000	##FFFFFF
##40390D	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)

#3F3707

Deuteranopia (green-blind)

#413A10

Tritanopia (blue-blind)

#463430

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #40390d;
/* rgb */ color: rgb(64, 57, 13);
/* oklch */ color: oklch(34.2% 0.062 100.1);

Tailwind

colors: {
  custom: {
    50: '#776f4f',
    500: '#40390d',
    950: '#000000',
  },
}

SCSS

$custom: #40390d;
$custom-light: #776f4f;
$custom-dark: #000000;

JSON

{
  "hex": "#40390d",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 13
  },
  "hsl": {
    "h": 51.765,
    "s": 66.234,
    "l": 15.098
  },
  "oklch": {
    "l": 0.34229,
    "c": 0.06161,
    "h": 100.1
  },
  "luminance": 0.04045
}

Semantic roles & 50–950 ramp

primary

#40390D

secondary

#2D387C

accent

#56E93F

background

#F7F6F4

surface

#EDECE7

border

#C8C7C3

text

#090702

muted

#7B7A78

Preview Lab

Preview with #40390D

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

Preview Lab → · Contrast checker → · Palette generator →