#3F400D#3F400D

#3F400D is a dark, moderate yellow. Relative luminance 0.048; OKLCH L 36.0% C 0.070 H 110.6°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F400D
RGB	rgb(63, 64, 13)
HSL	hsl(61, 66%, 15%)
HSV	hsv(61, 80%, 25%)
CMYK	cmyk(1.6%, 0%, 79.7%, 74.9%)
CIE-LAB	lab(26.02, -7.83, 29.35)
CIE-LCH	lch(26.02, 30.37, 104.95°)
OKLab	oklab(35.95% -0.0245 0.0652)
OKLCH	oklch(35.95% 0.07 110.6)
XYZ	xyz(3.9561, 4.7527, 1.0897)
Luminance	0.0475 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F400D #0E0D40

analogous

#40270D #3F400D #26400D

triadic

#3F400D #0D3F40 #400D3F

tetradic

#3F400D #0D4027 #0E0D40 #400D26

square

#3F400D #0D4027 #0E0D40 #400D26

split-complementary

#3F400D #0D2640 #270D40

monochromatic

#191905 #191905 #3F400D #717317 #A3A622

Accessibility & contrast

On white

10.77

#3F400D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#3F400D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F400D

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F400D	#FFFFFF	#000000	##FFFFFF
##3F400D	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463D05

Deuteranopia (green-blind)

#463E11

Tritanopia (blue-blind)

#443B36

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #3f400d;
/* rgb */ color: rgb(63, 64, 13);
/* oklch */ color: oklch(36.0% 0.070 110.6);

Tailwind

colors: {
  custom: {
    50: '#767450',
    500: '#3f400d',
    950: '#000000',
  },
}

SCSS

$custom: #3f400d;
$custom-light: #767450;
$custom-dark: #000000;

JSON

{
  "hex": "#3f400d",
  "rgb": {
    "r": 63,
    "g": 64,
    "b": 13
  },
  "hsl": {
    "h": 61.176,
    "s": 66.234,
    "l": 15.098
  },
  "oklch": {
    "l": 0.35953,
    "c": 0.06966,
    "h": 110.6
  },
  "luminance": 0.04753
}

Semantic roles & 50–950 ramp

primary

#3F400D

secondary

#2F2D7C

accent

#3FE942

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F400D

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

Preview Lab → · Contrast checker → · Palette generator →