#40390E#40390E

#40390E is a dark, moderate yellow. Relative luminance 0.040; OKLCH L 34.2% C 0.061 H 99.9°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#40390E
RGB	rgb(64, 57, 14)
HSL	hsl(52, 64%, 15%)
HSV	hsv(52, 78%, 25%)
CMYK	cmyk(0%, 10.9%, 78.1%, 74.9%)
CIE-LAB	lab(23.83, -2.88, 26.73)
CIE-LCH	lch(23.83, 26.89, 96.16°)
OKLab	oklab(34.24% -0.0104 0.0599)
OKLCH	oklch(34.24% 0.061 99.9)
XYZ	xyz(3.6569, 4.0481, 1.0041)
Luminance	0.0405 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40390E #0E1540

analogous

#40200E #40390E #2E400E

triadic

#40390E #0E4039 #390E40

tetradic

#40390E #0E4020 #0E1540 #400E2E

square

#40390E #0E4020 #0E1540 #400E2E

split-complementary

#40390E #0E2E40 #200E40

monochromatic

#191605 #191605 #40390E #726619 #A49224

Accessibility & contrast

On white

11.60

#40390E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#40390E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40390E

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40390E	#FFFFFF	#000000	##FFFFFF
##40390E	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3708

Deuteranopia (green-blind)

#413A11

Tritanopia (blue-blind)

#463430

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #40390e;
/* rgb */ color: rgb(64, 57, 14);
/* oklch */ color: oklch(34.2% 0.061 99.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#40390e",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 14
  },
  "hsl": {
    "h": 51.6,
    "s": 64.103,
    "l": 15.294
  },
  "oklch": {
    "l": 0.34238,
    "c": 0.06077,
    "h": 99.9
  },
  "luminance": 0.04048
}

Semantic roles & 50–950 ramp

primary

#40390E

secondary

#2F397B

accent

#58E741

background

#F7F6F4

surface

#EDECE7

border

#C8C7C3

text

#090702

muted

#7B7A78

Preview Lab

Preview with #40390E

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

Preview Lab → · Contrast checker → · Palette generator →