#3F430B#3F430B

#3F430B is a dark, moderate yellow. Relative luminance 0.051; OKLCH L 36.7% C 0.075 H 113.7°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#3F430B
RGB	rgb(63, 67, 11)
HSL	hsl(64, 72%, 15%)
HSV	hsv(64, 84%, 26%)
CMYK	cmyk(6%, 0%, 83.6%, 73.7%)
CIE-LAB	lab(27.00, -9.76, 31.13)
CIE-LCH	lch(27.00, 32.63, 107.40°)
OKLab	oklab(36.74% -0.03 0.0686)
OKLCH	oklch(36.74% 0.075 113.7)
XYZ	xyz(4.1176, 5.0953, 1.0831)
Luminance	0.0510 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F430B #0F0B43

analogous

#432B0B #3F430B #23430B

triadic

#3F430B #0B3F43 #430B3F

tetradic

#3F430B #0B432B #0F0B43 #430B23

square

#3F430B #0B432B #0F0B43 #430B23

split-complementary

#3F430B #0B2343 #2B0B43

monochromatic

#191A04 #191A04 #3F430B #707814 #A2AC1C

Accessibility & contrast

On white

10.40

#3F430B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#3F430B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F430B

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F430B	#FFFFFF	#000000	##FFFFFF
##3F430B	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#493F02

Deuteranopia (green-blind)

#494010

Tritanopia (blue-blind)

#443E38

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #3f430b;
/* rgb */ color: rgb(63, 67, 11);
/* oklch */ color: oklch(36.7% 0.075 113.7);

Tailwind

colors: {
  custom: {
    50: '#76774f',
    500: '#3f430b',
    950: '#000000',
  },
}

SCSS

$custom: #3f430b;
$custom-light: #76774f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f430b",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 11
  },
  "hsl": {
    "h": 64.286,
    "s": 71.795,
    "l": 15.294
  },
  "oklch": {
    "l": 0.36738,
    "c": 0.07486,
    "h": 113.7
  },
  "luminance": 0.05095
}

Semantic roles & 50–950 ramp

primary

#3F430B

secondary

#302A80

accent

#39EF46

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #3F430B

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

Preview Lab → · Contrast checker → · Palette generator →