#3F440F#3F440F

#3F440F is a dark, moderate yellow. Relative luminance 0.052; OKLCH L 37.0% C 0.073 H 114.7°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F440F
RGB	rgb(63, 68, 15)
HSL	hsl(66, 64%, 16%)
HSV	hsv(66, 78%, 27%)
CMYK	cmyk(7.4%, 0%, 77.9%, 73.3%)
CIE-LAB	lab(27.37, -10.11, 29.79)
CIE-LCH	lch(27.37, 31.46, 108.76°)
OKLab	oklab(37.04% -0.0306 0.0666)
OKLCH	oklch(37.04% 0.073 114.7)
XYZ	xyz(4.2034, 5.2256, 1.2391)
Luminance	0.0522 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F440F #140F44

analogous

#442F0F #3F440F #25440F

triadic

#3F440F #0F3F44 #440F3F

tetradic

#3F440F #0F442F #140F44 #440F25

square

#3F440F #0F442F #140F44 #440F25

split-complementary

#3F440F #0F2544 #2F0F44

monochromatic

#171906 #171906 #3F440F #6D761A #9CA825

Accessibility & contrast

On white

10.27

#3F440F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#3F440F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F440F

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F440F	#FFFFFF	#000000	##FFFFFF
##3F440F	1.00	10.27	2.05	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#494007

Deuteranopia (green-blind)

#494113

Tritanopia (blue-blind)

#44403A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3f440f;
/* rgb */ color: rgb(63, 68, 15);
/* oklch */ color: oklch(37.0% 0.073 114.7);

Tailwind

colors: {
  custom: {
    50: '#767751',
    500: '#3f440f',
    950: '#000000',
  },
}

SCSS

$custom: #3f440f;
$custom-light: #767751;
$custom-dark: #000000;

JSON

{
  "hex": "#3f440f",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 15
  },
  "hsl": {
    "h": 65.66,
    "s": 63.855,
    "l": 16.275
  },
  "oklch": {
    "l": 0.37039,
    "c": 0.07324,
    "h": 114.7
  },
  "luminance": 0.05225
}

Semantic roles & 50–950 ramp

primary

#3F440F

secondary

#38307E

accent

#41E751

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F440F

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

Preview Lab → · Contrast checker → · Palette generator →