#3F440B#3F440B

#3F440B is a dark, moderate yellow. Relative luminance 0.052; OKLCH L 37.0% C 0.076 H 114.6°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F440B
RGB	rgb(63, 68, 11)
HSL	hsl(65, 72%, 15%)
HSV	hsv(65, 84%, 27%)
CMYK	cmyk(7.4%, 0%, 83.8%, 73.3%)
CIE-LAB	lab(27.34, -10.35, 31.45)
CIE-LCH	lch(27.34, 33.11, 108.22°)
OKLab	oklab(37.01% -0.0317 0.0692)
OKLCH	oklch(37.01% 0.076 114.6)
XYZ	xyz(4.1775, 5.2152, 1.1031)
Luminance	0.0522 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F440B #100B44

analogous

#442C0B #3F440B #22440B

triadic

#3F440B #0B3F44 #440B3F

tetradic

#3F440B #0B442C #100B44 #440B22

square

#3F440B #0B442C #100B44 #440B22

split-complementary

#3F440B #0B2244 #2C0B44

monochromatic

#181A04 #181A04 #3F440B #707914 #A1AD1C

Accessibility & contrast

On white

10.28

#3F440B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#3F440B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F440B

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F440B	#FFFFFF	#000000	##FFFFFF
##3F440B	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4002

Deuteranopia (green-blind)

#494110

Tritanopia (blue-blind)

#443F39

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3f440b;
/* rgb */ color: rgb(63, 68, 11);
/* oklch */ color: oklch(37.0% 0.076 114.6);

Tailwind

colors: {
  custom: {
    50: '#76774f',
    500: '#3f440b',
    950: '#000000',
  },
}

SCSS

$custom: #3f440b;
$custom-light: #76774f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f440b",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 11
  },
  "hsl": {
    "h": 65.263,
    "s": 72.152,
    "l": 15.49
  },
  "oklch": {
    "l": 0.37007,
    "c": 0.07615,
    "h": 114.6
  },
  "luminance": 0.05215
}

Semantic roles & 50–950 ramp

primary

#3F440B

secondary

#322A81

accent

#39EF49

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F440B

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

Preview Lab → · Contrast checker → · Palette generator →