#3F450B#3F450B

#3F450B is a dark, moderate yellow. Relative luminance 0.053; OKLCH L 37.3% C 0.077 H 115.5°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#3F450B
RGB	rgb(63, 69, 11)
HSL	hsl(66, 73%, 16%)
HSV	hsv(66, 84%, 27%)
CMYK	cmyk(8.7%, 0%, 84.1%, 72.9%)
CIE-LAB	lab(27.67, -10.94, 31.76)
CIE-LCH	lch(27.67, 33.59, 109.01°)
OKLab	oklab(37.28% -0.0333 0.0699)
OKLCH	oklch(37.28% 0.077 115.5)
XYZ	xyz(4.2385, 5.3372, 1.1235)
Luminance	0.0534 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F450B #110B45

analogous

#452E0B #3F450B #22450B

triadic

#3F450B #0B3F45 #450B3F

tetradic

#3F450B #0B452E #110B45 #450B22

square

#3F450B #0B452E #110B45 #450B22

split-complementary

#3F450B #0B2245 #2E0B45

monochromatic

#181A04 #181A04 #3F450B #6F7A13 #9FAF1C

Accessibility & contrast

On white

10.16

#3F450B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#3F450B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F450B

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F450B	#FFFFFF	#000000	##FFFFFF
##3F450B	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4102

Deuteranopia (green-blind)

#4A4210

Tritanopia (blue-blind)

#44403A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3f450b;
/* rgb */ color: rgb(63, 69, 11);
/* oklch */ color: oklch(37.3% 0.077 115.5);

Tailwind

colors: {
  custom: {
    50: '#76784f',
    500: '#3f450b',
    950: '#000000',
  },
}

SCSS

$custom: #3f450b;
$custom-light: #76784f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f450b",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 11
  },
  "hsl": {
    "h": 66.207,
    "s": 72.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.37276,
    "c": 0.07744,
    "h": 115.5
  },
  "luminance": 0.05337
}

Semantic roles & 50–950 ramp

primary

#3F450B

secondary

#332A81

accent

#39EF4B

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090902

muted

#7B7B78

Preview Lab

Preview with #3F450B

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

Preview Lab → · Contrast checker → · Palette generator →