#646D2B#646D2B

#646D2B is a mid, moderate yellow. Relative luminance 0.138; OKLCH L 51.2% C 0.090 H 116.2°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#646D2B
RGB	rgb(100, 109, 43)
HSL	hsl(68, 43%, 30%)
HSV	hsv(68, 61%, 43%)
CMYK	cmyk(8.3%, 0%, 60.6%, 57.3%)
CIE-LAB	lab(43.98, -13.67, 34.96)
CIE-LCH	lch(43.98, 37.54, 111.36°)
OKLab	oklab(51.23% -0.0398 0.081)
OKLCH	oklch(51.23% 0.09 116.2)
XYZ	xyz(11.1604, 13.8212, 4.3649)
Luminance	0.1382 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D2B #342B6D

analogous

#6D552B #646D2B #436D2B

triadic

#646D2B #2B646D #6D2B64

tetradic

#646D2B #2B6D55 #342B6D #6D2B43

square

#646D2B #2B6D55 #342B6D #6D2B43

split-complementary

#646D2B #2B436D #552B6D

monochromatic

#141609 #3C411A #646D2B #8C993C #AEBC56

Accessibility & contrast

On white

5.58

#646D2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#646D2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D2B

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D2B	#FFFFFF	#000000	##FFFFFF
##646D2B	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746824

Deuteranopia (green-blind)

#73682F

Tritanopia (blue-blind)

#6A675F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646d2b;
/* rgb */ color: rgb(100, 109, 43);
/* oklch */ color: oklch(51.2% 0.090 116.2);

Tailwind

colors: {
  custom: {
    50: '#929667',
    500: '#646d2b',
    950: '#000000',
  },
}

SCSS

$custom: #646d2b;
$custom-light: #929667;
$custom-dark: #000000;

JSON

{
  "hex": "#646d2b",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 43
  },
  "hsl": {
    "h": 68.182,
    "s": 43.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.5123,
    "c": 0.09026,
    "h": 116.2
  },
  "luminance": 0.13821
}

Semantic roles & 50–950 ramp

primary

#646D2B

secondary

#5F559F

accent

#55D366

background

#F9F9F6

surface

#F1F2EB

border

#CBCCC6

text

#0D0D06

muted

#7E7E7A

Preview Lab

Preview with #646D2B

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

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