#403B03#403B03

#403B03 is a dark, moderate yellow. Relative luminance 0.042; OKLCH L 34.7% C 0.071 H 104.0°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#403B03
RGB	rgb(64, 59, 3)
HSL	hsl(55, 91%, 13%)
HSV	hsv(55, 95%, 25%)
CMYK	cmyk(0%, 7.8%, 95.3%, 74.9%)
CIE-LAB	lab(24.40, -4.76, 31.96)
CIE-LCH	lch(24.40, 32.31, 98.48°)
OKLab	oklab(34.67% -0.0171 0.0689)
OKLCH	oklch(34.67% 0.071 104)
XYZ	xyz(3.6949, 4.2247, 0.7069)
Luminance	0.0422 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403B03 #030840

analogous

#401C03 #403B03 #264003

triadic

#403B03 #03403B #3B0340

tetradic

#403B03 #03401C #030840 #400326

square

#403B03 #03401C #030840 #400326

split-complementary

#403B03 #032640 #1C0340

monochromatic

#1D1B01 #1D1B01 #403B03 #7A7106 #B5A708

Accessibility & contrast

On white

11.38

#403B03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#403B03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403B03

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403B03	#FFFFFF	#000000	##FFFFFF
##403B03	1.00	11.38	1.84	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#413900

Deuteranopia (green-blind)

#433B07

Tritanopia (blue-blind)

#463631

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #403b03;
/* rgb */ color: rgb(64, 59, 3);
/* oklch */ color: oklch(34.7% 0.071 104.0);

Tailwind

colors: {
  custom: {
    50: '#78704a',
    500: '#403b03',
    950: '#000000',
  },
}

SCSS

$custom: #403b03;
$custom-light: #78704a;
$custom-dark: #000000;

JSON

{
  "hex": "#403b03",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 3
  },
  "hsl": {
    "h": 55.082,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.34666,
    "c": 0.07098,
    "h": 104
  },
  "luminance": 0.04224
}

Semantic roles & 50–950 ramp

primary

#403B03

secondary

#1D2582

accent

#3AFF29

background

#F7F6F4

surface

#EDECE7

border

#C8C7C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #403B03

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

Preview Lab → · Contrast checker → · Palette generator →