#3F420B#3F420B

#3F420B is a dark, moderate yellow. Relative luminance 0.050; OKLCH L 36.5% C 0.074 H 112.7°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F420B
RGB	rgb(63, 66, 11)
HSL	hsl(63, 71%, 15%)
HSV	hsv(63, 83%, 26%)
CMYK	cmyk(4.5%, 0%, 83.3%, 74.1%)
CIE-LAB	lab(26.67, -9.16, 30.82)
CIE-LCH	lch(26.67, 32.15, 106.55°)
OKLab	oklab(36.47% -0.0284 0.0679)
OKLCH	oklch(36.47% 0.074 112.7)
XYZ	xyz(4.0586, 4.9774, 1.0635)
Luminance	0.0498 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F420B #0E0B42

analogous

#422A0B #3F420B #23420B

triadic

#3F420B #0B3F42 #420B3F

tetradic

#3F420B #0B422A #0E0B42 #420B23

square

#3F420B #0B422A #0E0B42 #420B23

split-complementary

#3F420B #0B2342 #2A0B42

monochromatic

#191A04 #191A04 #3F420B #717614 #A3AB1C

Accessibility & contrast

On white

10.52

#3F420B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#3F420B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F420B

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F420B	#FFFFFF	#000000	##FFFFFF
##3F420B	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#483E02

Deuteranopia (green-blind)

#484010

Tritanopia (blue-blind)

#443D38

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #3f420b;
/* rgb */ color: rgb(63, 66, 11);
/* oklch */ color: oklch(36.5% 0.074 112.7);

Tailwind

colors: {
  custom: {
    50: '#76764f',
    500: '#3f420b',
    950: '#000000',
  },
}

SCSS

$custom: #3f420b;
$custom-light: #76764f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f420b",
  "rgb": {
    "r": 63,
    "g": 66,
    "b": 11
  },
  "hsl": {
    "h": 63.273,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.36471,
    "c": 0.0736,
    "h": 112.7
  },
  "luminance": 0.04977
}

Semantic roles & 50–950 ramp

primary

#3F420B

secondary

#2F2A7F

accent

#3AEE43

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F420B

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

Preview Lab → · Contrast checker → · Palette generator →