#403818#403818

#403818 is a dark, muted yellow. Relative luminance 0.040; OKLCH L 34.1% C 0.050 H 95.6°. Best body text is #FFFFFF at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#403818
RGB	rgb(64, 56, 24)
HSL	hsl(48, 45%, 17%)
HSV	hsv(48, 63%, 25%)
CMYK	cmyk(0%, 12.5%, 62.5%, 74.9%)
CIE-LAB	lab(23.62, -1.42, 21.03)
CIE-LCH	lch(23.62, 21.08, 93.86°)
OKLab	oklab(34.11% -0.0048 0.0494)
OKLCH	oklch(34.11% 0.05 95.6)
XYZ	xyz(3.6935, 3.9844, 1.4385)
Luminance	0.0398 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403818 #182040

analogous

#402418 #403818 #344018

triadic

#403818 #184038 #381840

tetradic

#403818 #184024 #182040 #401834

square

#403818 #184024 #182040 #401834

split-complementary

#403818 #183440 #241840

monochromatic

#161308 #161308 #403818 #6D5F29 #998639

Accessibility & contrast

On white

11.69

#403818 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#403818 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403818

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403818	#FFFFFF	#000000	##FFFFFF
##403818	1.00	11.69	1.80	11.69
#FFFFFF	11.69	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3715

Deuteranopia (green-blind)

#403919

Tritanopia (blue-blind)

#453431

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #403818;
/* rgb */ color: rgb(64, 56, 24);
/* oklch */ color: oklch(34.1% 0.050 95.6);

Tailwind

colors: {
  custom: {
    50: '#766e56',
    500: '#403818',
    950: '#000000',
  },
}

SCSS

$custom: #403818;
$custom-light: #766e56;
$custom-dark: #000000;

JSON

{
  "hex": "#403818",
  "rgb": {
    "r": 64,
    "g": 56,
    "b": 24
  },
  "hsl": {
    "h": 48,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.34108,
    "c": 0.04962,
    "h": 95.6
  },
  "luminance": 0.03984
}

Semantic roles & 50–950 ramp

primary

#403818

secondary

#3D4977

accent

#6DD553

background

#F7F6F5

surface

#EDEBE9

border

#C8C6C5

text

#090703

muted

#7B7A78

Preview Lab

Preview with #403818

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

Preview Lab → · Contrast checker → · Palette generator →