#403D0B#403D0B

#403D0B is a dark, moderate yellow. Relative luminance 0.045; OKLCH L 35.3% C 0.067 H 105.9°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#403D0B
RGB	rgb(64, 61, 11)
HSL	hsl(57, 71%, 15%)
HSV	hsv(57, 83%, 25%)
CMYK	cmyk(0%, 4.7%, 82.8%, 74.9%)
CIE-LAB	lab(25.11, -5.59, 29.37)
CIE-LCH	lch(25.11, 29.90, 100.77°)
OKLab	oklab(35.25% -0.0184 0.0648)
OKLCH	oklch(35.25% 0.067 105.9)
XYZ	xyz(3.8437, 4.4518, 0.9734)
Luminance	0.0445 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D0B #0B0E40

analogous

#40230B #403D0B #29400B

triadic

#403D0B #0B403D #3D0B40

tetradic

#403D0B #0B4023 #0B0E40 #400B29

square

#403D0B #0B4023 #0B0E40 #400B29

split-complementary

#403D0B #0B2940 #230B40

monochromatic

#1A1904 #1A1904 #403D0B #746F14 #A8A11D

Accessibility & contrast

On white

11.11

#403D0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#403D0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D0B

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D0B	#FFFFFF	#000000	##FFFFFF
##403D0B	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#433A04

Deuteranopia (green-blind)

#443C0F

Tritanopia (blue-blind)

#453833

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #403d0b;
/* rgb */ color: rgb(64, 61, 11);
/* oklch */ color: oklch(35.3% 0.067 105.9);

Tailwind

colors: {
  custom: {
    50: '#77724e',
    500: '#403d0b',
    950: '#000000',
  },
}

SCSS

$custom: #403d0b;
$custom-light: #77724e;
$custom-dark: #000000;

JSON

{
  "hex": "#403d0b",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 11
  },
  "hsl": {
    "h": 56.604,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.3525,
    "c": 0.06739,
    "h": 105.9
  },
  "luminance": 0.04452
}

Semantic roles & 50–950 ramp

primary

#403D0B

secondary

#2A2F7D

accent

#44ED3A

background

#F7F6F4

surface

#EDECE7

border

#C8C7C3

text

#090702

muted

#7B7A78

Preview Lab

Preview with #403D0B

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

Preview Lab → · Contrast checker → · Palette generator →