#3F400C#3F400C

#3F400C is a dark, moderate yellow. Relative luminance 0.048; OKLCH L 35.9% C 0.070 H 110.6°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F400C
RGB	rgb(63, 64, 12)
HSL	hsl(61, 68%, 15%)
HSV	hsv(61, 81%, 25%)
CMYK	cmyk(1.6%, 0%, 81.2%, 74.9%)
CIE-LAB	lab(26.01, -7.89, 29.77)
CIE-LCH	lch(26.01, 30.80, 104.85°)
OKLab	oklab(35.95% -0.0247 0.0659)
OKLCH	oklch(35.95% 0.07 110.6)
XYZ	xyz(3.9498, 4.7502, 1.0566)
Luminance	0.0475 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F400C #0D0C40

analogous

#40270C #3F400C #25400C

triadic

#3F400C #0C3F40 #400C3F

tetradic

#3F400C #0C4027 #0D0C40 #400C25

square

#3F400C #0C4027 #0D0C40 #400C25

split-complementary

#3F400C #0C2540 #270C40

monochromatic

#191A05 #191A05 #3F400C #727416 #A4A71F

Accessibility & contrast

On white

10.77

#3F400C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#3F400C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F400C

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F400C	#FFFFFF	#000000	##FFFFFF
##3F400C	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463D04

Deuteranopia (green-blind)

#463E10

Tritanopia (blue-blind)

#443B36

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #3f400c;
/* rgb */ color: rgb(63, 64, 12);
/* oklch */ color: oklch(35.9% 0.070 110.6);

Tailwind

colors: {
  custom: {
    50: '#76744f',
    500: '#3f400c',
    950: '#000000',
  },
}

SCSS

$custom: #3f400c;
$custom-light: #76744f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f400c",
  "rgb": {
    "r": 63,
    "g": 64,
    "b": 12
  },
  "hsl": {
    "h": 61.154,
    "s": 68.421,
    "l": 14.902
  },
  "oklch": {
    "l": 0.35945,
    "c": 0.0704,
    "h": 110.6
  },
  "luminance": 0.0475
}

Semantic roles & 50–950 ramp

primary

#3F400C

secondary

#2D2C7C

accent

#3DEB40

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F400C

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

Preview Lab → · Contrast checker → · Palette generator →