#3B400B#3B400B

#3B400B is a dark, moderate yellow. Relative luminance 0.046; OKLCH L 35.5% C 0.072 H 114.9°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#3B400B
RGB	rgb(59, 64, 11)
HSL	hsl(66, 71%, 15%)
HSV	hsv(66, 83%, 25%)
CMYK	cmyk(7.8%, 0%, 82.8%, 74.9%)
CIE-LAB	lab(25.63, -10.00, 29.69)
CIE-LCH	lch(25.63, 31.33, 108.62°)
OKLab	oklab(35.54% -0.0305 0.0657)
OKLCH	oklch(35.54% 0.072 114.9)
XYZ	xyz(3.6975, 4.6208, 1.0137)
Luminance	0.0462 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B400B #100B40

analogous

#402B0B #3B400B #21400B

triadic

#3B400B #0B3B40 #400B3B

tetradic

#3B400B #0B402B #100B40 #400B21

square

#3B400B #0B402B #100B40 #400B21

split-complementary

#3B400B #0B2140 #2B0B40

monochromatic

#181A04 #181A04 #3B400B #6B7414 #9BA81D

Accessibility & contrast

On white

10.91

#3B400B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#3B400B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B400B

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B400B	#FFFFFF	#000000	##FFFFFF
##3B400B	1.00	10.91	1.92	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#453C03

Deuteranopia (green-blind)

#453D0F

Tritanopia (blue-blind)

#3F3C36

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #3b400b;
/* rgb */ color: rgb(59, 64, 11);
/* oklch */ color: oklch(35.5% 0.072 114.9);

Tailwind

colors: {
  custom: {
    50: '#73744e',
    500: '#3b400b',
    950: '#000000',
  },
}

SCSS

$custom: #3b400b;
$custom-light: #73744e;
$custom-dark: #000000;

JSON

{
  "hex": "#3b400b",
  "rgb": {
    "r": 59,
    "g": 64,
    "b": 11
  },
  "hsl": {
    "h": 65.66,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.35542,
    "c": 0.07241,
    "h": 114.9
  },
  "luminance": 0.04621
}

Semantic roles & 50–950 ramp

primary

#3B400B

secondary

#322A7D

accent

#3AED4B

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#080802

muted

#7B7B78

Preview Lab

Preview with #3B400B

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

Preview Lab → · Contrast checker → · Palette generator →