#3F400A#3F400A

#3F400A is a dark, moderate yellow. Relative luminance 0.047; OKLCH L 35.9% C 0.072 H 110.6°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F400A
RGB	rgb(63, 64, 10)
HSL	hsl(61, 73%, 15%)
HSV	hsv(61, 84%, 25%)
CMYK	cmyk(1.6%, 0%, 84.4%, 74.9%)
CIE-LAB	lab(26.00, -8.01, 30.59)
CIE-LCH	lch(26.00, 31.62, 104.67°)
OKLab	oklab(35.93% -0.0253 0.0672)
OKLCH	oklch(35.93% 0.072 110.6)
XYZ	xyz(3.9382, 4.7456, 0.9956)
Luminance	0.0474 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F400A #0B0A40

analogous

#40260A #3F400A #24400A

triadic

#3F400A #0A3F40 #400A3F

tetradic

#3F400A #0A4026 #0B0A40 #400A24

square

#3F400A #0A4026 #0B0A40 #400A24

split-complementary

#3F400A #0A2440 #260A40

monochromatic

#1A1A04 #1A1A04 #3F400A #737512 #A7AA1B

Accessibility & contrast

On white

10.77

#3F400A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#3F400A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F400A

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F400A	#FFFFFF	#000000	##FFFFFF
##3F400A	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)

#463D02

Deuteranopia (green-blind)

#463E0E

Tritanopia (blue-blind)

#443B36

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #3f400a;
/* rgb */ color: rgb(63, 64, 10);
/* oklch */ color: oklch(35.9% 0.072 110.6);

Tailwind

colors: {
  custom: {
    50: '#76744e',
    500: '#3f400a',
    950: '#000000',
  },
}

SCSS

$custom: #3f400a;
$custom-light: #76744e;
$custom-dark: #000000;

JSON

{
  "hex": "#3f400a",
  "rgb": {
    "r": 63,
    "g": 64,
    "b": 10
  },
  "hsl": {
    "h": 61.111,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.3593,
    "c": 0.07179,
    "h": 110.6
  },
  "luminance": 0.04745
}

Semantic roles & 50–950 ramp

primary

#3F400A

secondary

#2A297D

accent

#38F03C

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F400A

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

Preview Lab → · Contrast checker → · Palette generator →