#3F420F#3F420F

#3F420F is a dark, moderate yellow. Relative luminance 0.050; OKLCH L 36.5% C 0.071 H 112.7°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F420F
RGB	rgb(63, 66, 15)
HSL	hsl(64, 63%, 16%)
HSV	hsv(64, 77%, 26%)
CMYK	cmyk(4.5%, 0%, 77.3%, 74.1%)
CIE-LAB	lab(26.70, -8.92, 29.12)
CIE-LCH	lch(26.70, 30.46, 107.03°)
OKLab	oklab(36.5% -0.0272 0.0652)
OKLCH	oklch(36.5% 0.071 112.7)
XYZ	xyz(4.0845, 4.9878, 1.1994)
Luminance	0.0499 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F420F #120F42

analogous

#422B0F #3F420F #25420F

triadic

#3F420F #0F3F42 #420F3F

tetradic

#3F420F #0F422B #120F42 #420F25

square

#3F420F #0F422B #120F42 #420F25

split-complementary

#3F420F #0F2542 #2B0F42

monochromatic

#181906 #181906 #3F420F #6F741A #9EA626

Accessibility & contrast

On white

10.51

#3F420F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#3F420F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F420F

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F420F	#FFFFFF	#000000	##FFFFFF
##3F420F	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#483F07

Deuteranopia (green-blind)

#484013

Tritanopia (blue-blind)

#443E38

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #3f420f;
/* rgb */ color: rgb(63, 66, 15);
/* oklch */ color: oklch(36.5% 0.071 112.7);

Tailwind

colors: {
  custom: {
    50: '#767651',
    500: '#3f420f',
    950: '#000000',
  },
}

SCSS

$custom: #3f420f;
$custom-light: #767651;
$custom-dark: #000000;

JSON

{
  "hex": "#3f420f",
  "rgb": {
    "r": 63,
    "g": 66,
    "b": 15
  },
  "hsl": {
    "h": 63.529,
    "s": 62.963,
    "l": 15.882
  },
  "oklch": {
    "l": 0.36504,
    "c": 0.07062,
    "h": 112.7
  },
  "luminance": 0.04988
}

Semantic roles & 50–950 ramp

primary

#3F420F

secondary

#35307C

accent

#42E64B

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F420F

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

Preview Lab → · Contrast checker → · Palette generator →