#646D28#646D28

#646D28 is a mid, moderate yellow. Relative luminance 0.138; OKLCH L 51.2% C 0.093 H 116.0°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#646D28
RGB	rgb(100, 109, 40)
HSL	hsl(68, 46%, 29%)
HSV	hsv(68, 63%, 43%)
CMYK	cmyk(8.3%, 0%, 63.3%, 57.3%)
CIE-LAB	lab(43.94, -13.93, 36.40)
CIE-LCH	lch(43.94, 38.97, 110.94°)
OKLab	oklab(51.2% -0.0409 0.0837)
OKLCH	oklch(51.2% 0.093 116)
XYZ	xyz(11.1074, 13.7999, 4.0856)
Luminance	0.1380 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D28 #31286D

analogous

#6D5428 #646D28 #426D28

triadic

#646D28 #28646D #6D2864

tetradic

#646D28 #286D54 #31286D #6D2842

square

#646D28 #286D54 #31286D #6D2842

split-complementary

#646D28 #28426D #54286D

monochromatic

#151608 #3B4018 #646D28 #8D9A38 #B1BF50

Accessibility & contrast

On white

5.59

#646D28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#646D28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D28

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D28	#FFFFFF	#000000	##FFFFFF
##646D28	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746720

Deuteranopia (green-blind)

#74682C

Tritanopia (blue-blind)

#6A675E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646d28;
/* rgb */ color: rgb(100, 109, 40);
/* oklch */ color: oklch(51.2% 0.093 116.0);

Tailwind

colors: {
  custom: {
    50: '#929665',
    500: '#646d28',
    950: '#000000',
  },
}

SCSS

$custom: #646d28;
$custom-light: #929665;
$custom-dark: #000000;

JSON

{
  "hex": "#646d28",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 40
  },
  "hsl": {
    "h": 67.826,
    "s": 46.309,
    "l": 29.216
  },
  "oklch": {
    "l": 0.51196,
    "c": 0.09312,
    "h": 116
  },
  "luminance": 0.138
}

Semantic roles & 50–950 ramp

primary

#646D28

secondary

#5C519F

accent

#52D663

background

#F9F9F6

surface

#F1F2EB

border

#CBCCC6

text

#0D0D06

muted

#7E7E7A

Preview Lab

Preview with #646D28

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

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