#403B18#403B18

#403B18 is a dark, muted yellow. Relative luminance 0.043; OKLCH L 34.9% C 0.053 H 101.3°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#403B18
RGB	rgb(64, 59, 24)
HSL	hsl(53, 45%, 17%)
HSV	hsv(53, 63%, 25%)
CMYK	cmyk(0%, 7.8%, 62.5%, 74.9%)
CIE-LAB	lab(24.59, -3.34, 22.16)
CIE-LCH	lch(24.59, 22.41, 98.56°)
OKLab	oklab(34.88% -0.0103 0.0518)
OKLCH	oklch(34.88% 0.053 101.3)
XYZ	xyz(3.8433, 4.2840, 1.4884)
Luminance	0.0428 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403B18 #181D40

analogous

#402718 #403B18 #314018

triadic

#403B18 #18403B #3B1840

tetradic

#403B18 #184027 #181D40 #401831

square

#403B18 #184027 #181D40 #401831

split-complementary

#403B18 #183140 #271840

monochromatic

#161508 #161508 #403B18 #6D6429 #998D39

Accessibility & contrast

On white

11.31

#403B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#403B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403B18

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403B18	#FFFFFF	#000000	##FFFFFF
##403B18	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#403915

Deuteranopia (green-blind)

#423B1A

Tritanopia (blue-blind)

#453733

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #403b18;
/* rgb */ color: rgb(64, 59, 24);
/* oklch */ color: oklch(34.9% 0.053 101.3);

Tailwind

colors: {
  custom: {
    50: '#767056',
    500: '#403b18',
    950: '#000000',
  },
}

SCSS

$custom: #403b18;
$custom-light: #767056;
$custom-dark: #000000;

JSON

{
  "hex": "#403b18",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 24
  },
  "hsl": {
    "h": 52.5,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.34876,
    "c": 0.05285,
    "h": 101.3
  },
  "luminance": 0.04284
}

Semantic roles & 50–950 ramp

primary

#403B18

secondary

#3D4477

accent

#63D553

background

#F7F6F5

surface

#EDECE9

border

#C8C7C5

text

#090703

muted

#7B7A78

Preview Lab

Preview with #403B18

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

Preview Lab → · Contrast checker → · Palette generator →