#646F1F#646F1F

#646F1F is a mid, moderate yellow. Relative luminance 0.142; OKLCH L 51.6% C 0.103 H 116.9°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#646F1F
RGB	rgb(100, 111, 31)
HSL	hsl(68, 56%, 28%)
HSV	hsv(68, 72%, 44%)
CMYK	cmyk(9.9%, 0%, 72.1%, 56.5%)
CIE-LAB	lab(44.49, -15.68, 41.04)
CIE-LCH	lch(44.49, 43.93, 110.91°)
OKLab	oklab(51.61% -0.0468 0.092)
OKLCH	oklch(51.61% 0.103 116.9)
XYZ	xyz(11.1875, 14.1773, 3.4432)
Luminance	0.1418 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646F1F #2A1F6F

analogous

#6F521F #646F1F #3C6F1F

triadic

#646F1F #1F646F #6F1F64

tetradic

#646F1F #1F6F52 #2A1F6F #6F1F3C

square

#646F1F #1F6F52 #2A1F6F #6F1F3C

split-complementary

#646F1F #1F3C6F #521F6F

monochromatic

#161807 #393F12 #646F1F #8F9F2C #B6C93F

Accessibility & contrast

On white

5.48

#646F1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#646F1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646F1F

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646F1F	#FFFFFF	#000000	##FFFFFF
##646F1F	1.00	5.48	3.84	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#776912

Deuteranopia (green-blind)

#766A25

Tritanopia (blue-blind)

#6A695F

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #646f1f;
/* rgb */ color: rgb(100, 111, 31);
/* oklch */ color: oklch(51.6% 0.103 116.9);

Tailwind

colors: {
  custom: {
    50: '#939860',
    500: '#646f1f',
    950: '#000000',
  },
}

SCSS

$custom: #646f1f;
$custom-light: #939860;
$custom-dark: #000000;

JSON

{
  "hex": "#646f1f",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 31
  },
  "hsl": {
    "h": 68.25,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.51605,
    "c": 0.10323,
    "h": 116.9
  },
  "luminance": 0.14177
}

Semantic roles & 50–950 ramp

primary

#646F1F

secondary

#5347A3

accent

#48E05D

background

#F9F9F5

surface

#F2F2EA

border

#CCCCC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646F1F

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

Preview Lab → · Contrast checker → · Palette generator →