#3F390B#3F390B

#3F390B is a dark, moderate yellow. Relative luminance 0.040; OKLCH L 34.1% C 0.063 H 101.7°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F390B
RGB	rgb(63, 57, 11)
HSL	hsl(53, 70%, 15%)
HSV	hsv(53, 83%, 25%)
CMYK	cmyk(0%, 9.5%, 82.5%, 75.3%)
CIE-LAB	lab(23.70, -3.60, 27.96)
CIE-LCH	lch(23.70, 28.19, 97.33°)
OKLab	oklab(34.1% -0.0128 0.0619)
OKLCH	oklch(34.1% 0.063 101.7)
XYZ	xyz(3.5736, 4.0073, 0.9018)
Luminance	0.0401 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F390B #0B113F

analogous

#3F1F0B #3F390B #2B3F0B

triadic

#3F390B #0B3F39 #390B3F

tetradic

#3F390B #0B3F1F #0B113F #3F0B2B

square

#3F390B #0B3F1F #0B113F #3F0B2B

split-complementary

#3F390B #0B2B3F #1F0B3F

monochromatic

#1A1805 #1A1805 #3F390B #736814 #A7971D

Accessibility & contrast

On white

11.66

#3F390B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#3F390B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F390B

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F390B	#FFFFFF	#000000	##FFFFFF
##3F390B	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3704

Deuteranopia (green-blind)

#41390E

Tritanopia (blue-blind)

#453430

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #3f390b;
/* rgb */ color: rgb(63, 57, 11);
/* oklch */ color: oklch(34.1% 0.063 101.7);

Tailwind

colors: {
  custom: {
    50: '#766f4e',
    500: '#3f390b',
    950: '#000000',
  },
}

SCSS

$custom: #3f390b;
$custom-light: #766f4e;
$custom-dark: #000000;

JSON

{
  "hex": "#3f390b",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 11
  },
  "hsl": {
    "h": 53.077,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.34098,
    "c": 0.0632,
    "h": 101.7
  },
  "luminance": 0.04007
}

Semantic roles & 50–950 ramp

primary

#3F390B

secondary

#2A347C

accent

#4FED3B

background

#F7F6F4

surface

#EDECE7

border

#C8C7C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #3F390B

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

Preview Lab → · Contrast checker → · Palette generator →