#646E1B#646E1B

#646E1B is a mid, moderate yellow. Relative luminance 0.139; OKLCH L 51.3% C 0.105 H 116.2°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#646E1B
RGB	rgb(100, 110, 27)
HSL	hsl(67, 61%, 27%)
HSV	hsv(67, 75%, 43%)
CMYK	cmyk(9.1%, 0%, 75.5%, 56.9%)
CIE-LAB	lab(44.15, -15.38, 42.33)
CIE-LCH	lch(44.15, 45.04, 109.96°)
OKLab	oklab(51.32% -0.0463 0.094)
OKLCH	oklch(51.32% 0.105 116.2)
XYZ	xyz(11.0296, 13.9405, 3.1464)
Luminance	0.1394 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646E1B #251B6E

analogous

#6E4F1B #646E1B #3B6E1B

triadic

#646E1B #1B646E #6E1B64

tetradic

#646E1B #1B6E4F #251B6E #6E1B3B

square

#646E1B #1B6E4F #251B6E #6E1B3B

split-complementary

#646E1B #1B3B6E #4F1B6E

monochromatic

#161906 #373D0F #646E1B #919F27 #BBCE36

Accessibility & contrast

On white

5.54

#646E1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#646E1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646E1B

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646E1B	#FFFFFF	#000000	##FFFFFF
##646E1B	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#76680C

Deuteranopia (green-blind)

#756922

Tritanopia (blue-blind)

#6B675E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646e1b;
/* rgb */ color: rgb(100, 110, 27);
/* oklch */ color: oklch(51.3% 0.105 116.2);

Tailwind

colors: {
  custom: {
    50: '#93975e',
    500: '#646e1b',
    950: '#000000',
  },
}

SCSS

$custom: #646e1b;
$custom-light: #93975e;
$custom-dark: #000000;

JSON

{
  "hex": "#646e1b",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 27
  },
  "hsl": {
    "h": 67.229,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.51324,
    "c": 0.10482,
    "h": 116.2
  },
  "luminance": 0.1394
}

Semantic roles & 50–950 ramp

primary

#646E1B

secondary

#4E42A3

accent

#44E457

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646E1B

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

Preview Lab → · Contrast checker → · Palette generator →