#3F400F#3F400F

#3F400F is a dark, moderate yellow. Relative luminance 0.048; OKLCH L 36.0% C 0.068 H 110.5°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F400F
RGB	rgb(63, 64, 15)
HSL	hsl(61, 62%, 15%)
HSV	hsv(61, 77%, 25%)
CMYK	cmyk(1.6%, 0%, 76.6%, 74.9%)
CIE-LAB	lab(26.03, -7.71, 28.45)
CIE-LCH	lch(26.03, 29.48, 105.15°)
OKLab	oklab(35.97% -0.0239 0.0637)
OKLCH	oklch(35.97% 0.068 110.5)
XYZ	xyz(3.9696, 4.7581, 1.1611)
Luminance	0.0476 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F400F #100F40

analogous

#40280F #3F400F #26400F

triadic

#3F400F #0F3F40 #400F3F

tetradic

#3F400F #0F4028 #100F40 #400F26

square

#3F400F #0F4028 #100F40 #400F26

split-complementary

#3F400F #0F2640 #280F40

monochromatic

#181906 #181906 #3F400F #70721B #A1A326

Accessibility & contrast

On white

10.76

#3F400F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#3F400F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F400F

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F400F	#FFFFFF	#000000	##FFFFFF
##3F400F	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463D08

Deuteranopia (green-blind)

#463E12

Tritanopia (blue-blind)

#443C36

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #3f400f;
/* rgb */ color: rgb(63, 64, 15);
/* oklch */ color: oklch(36.0% 0.068 110.5);

Tailwind

colors: {
  custom: {
    50: '#767451',
    500: '#3f400f',
    950: '#000000',
  },
}

SCSS

$custom: #3f400f;
$custom-light: #767451;
$custom-dark: #000000;

JSON

{
  "hex": "#3f400f",
  "rgb": {
    "r": 63,
    "g": 64,
    "b": 15
  },
  "hsl": {
    "h": 61.224,
    "s": 62.025,
    "l": 15.49
  },
  "oklch": {
    "l": 0.35971,
    "c": 0.06806,
    "h": 110.5
  },
  "luminance": 0.04758
}

Semantic roles & 50–950 ramp

primary

#3F400F

secondary

#32307A

accent

#43E546

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F400F

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

Preview Lab → · Contrast checker → · Palette generator →