#3F370B#3F370B

#3F370B is a dark, moderate yellow. Relative luminance 0.038; OKLCH L 33.6% C 0.061 H 98.6°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F370B
RGB	rgb(63, 55, 11)
HSL	hsl(51, 70%, 15%)
HSV	hsv(51, 83%, 25%)
CMYK	cmyk(0%, 12.7%, 82.5%, 75.3%)
CIE-LAB	lab(23.05, -2.32, 27.30)
CIE-LCH	lch(23.05, 27.39, 94.86°)
OKLab	oklab(33.58% -0.0092 0.0606)
OKLCH	oklch(33.58% 0.061 98.6)
XYZ	xyz(3.4767, 3.8135, 0.8695)
Luminance	0.0381 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F370B #0B133F

analogous

#3F1D0B #3F370B #2D3F0B

triadic

#3F370B #0B3F37 #370B3F

tetradic

#3F370B #0B3F1D #0B133F #3F0B2D

square

#3F370B #0B3F1D #0B133F #3F0B2D

split-complementary

#3F370B #0B2D3F #1D0B3F

monochromatic

#1A1705 #1A1705 #3F370B #736414 #A7921D

Accessibility & contrast

On white

11.91

#3F370B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#3F370B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F370B

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F370B	#FFFFFF	#000000	##FFFFFF
##3F370B	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3505

Deuteranopia (green-blind)

#3F380E

Tritanopia (blue-blind)

#45322E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #3f370b;
/* rgb */ color: rgb(63, 55, 11);
/* oklch */ color: oklch(33.6% 0.061 98.6);

Tailwind

colors: {
  custom: {
    50: '#766d4d',
    500: '#3f370b',
    950: '#000000',
  },
}

SCSS

$custom: #3f370b;
$custom-light: #766d4d;
$custom-dark: #000000;

JSON

{
  "hex": "#3f370b",
  "rgb": {
    "r": 63,
    "g": 55,
    "b": 11
  },
  "hsl": {
    "h": 50.769,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.33581,
    "c": 0.06124,
    "h": 98.6
  },
  "luminance": 0.03813
}

Semantic roles & 50–950 ramp

primary

#3F370B

secondary

#2A377C

accent

#56ED3B

background

#F7F6F4

surface

#EDEBE7

border

#C8C6C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #3F370B

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

Preview Lab → · Contrast checker → · Palette generator →