#3F370A#3F370A

#3F370A is a dark, moderate yellow. Relative luminance 0.038; OKLCH L 33.6% C 0.062 H 98.8°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#3F370A
RGB	rgb(63, 55, 10)
HSL	hsl(51, 73%, 14%)
HSV	hsv(51, 84%, 25%)
CMYK	cmyk(0%, 12.7%, 84.1%, 75.3%)
CIE-LAB	lab(23.04, -2.38, 27.71)
CIE-LCH	lch(23.04, 27.81, 94.91°)
OKLab	oklab(33.57% -0.0094 0.0613)
OKLCH	oklch(33.57% 0.062 98.8)
XYZ	xyz(3.4710, 3.8112, 0.8399)
Luminance	0.0381 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F370A #0A123F

analogous

#3F1D0A #3F370A #2D3F0A

triadic

#3F370A #0A3F37 #370A3F

tetradic

#3F370A #0A3F1D #0A123F #3F0A2D

square

#3F370A #0A3F1D #0A123F #3F0A2D

split-complementary

#3F370A #0A2D3F #1D0A3F

monochromatic

#1A1704 #1A1704 #3F370A #746512 #A9931B

Accessibility & contrast

On white

11.92

#3F370A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#3F370A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F370A

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F370A	#FFFFFF	#000000	##FFFFFF
##3F370A	1.00	11.92	1.76	11.92
#FFFFFF	11.92	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3504

Deuteranopia (green-blind)

#3F380D

Tritanopia (blue-blind)

#45322E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #3f370a;
/* rgb */ color: rgb(63, 55, 10);
/* oklch */ color: oklch(33.6% 0.062 98.8);

Tailwind

colors: {
  custom: {
    50: '#766d4d',
    500: '#3f370a',
    950: '#000000',
  },
}

SCSS

$custom: #3f370a;
$custom-light: #766d4d;
$custom-dark: #000000;

JSON

{
  "hex": "#3f370a",
  "rgb": {
    "r": 63,
    "g": 55,
    "b": 10
  },
  "hsl": {
    "h": 50.943,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.33573,
    "c": 0.06199,
    "h": 98.8
  },
  "luminance": 0.03811
}

Semantic roles & 50–950 ramp

primary

#3F370A

secondary

#29357C

accent

#54EF38

background

#F7F6F4

surface

#EDEBE7

border

#C8C6C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #3F370A

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

Preview Lab → · Contrast checker → · Palette generator →