#646E1F#646E1F

#646E1F is a mid, moderate yellow. Relative luminance 0.140; OKLCH L 51.4% C 0.102 H 116.3°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#646E1F
RGB	rgb(100, 110, 31)
HSL	hsl(68, 56%, 28%)
HSV	hsv(68, 72%, 43%)
CMYK	cmyk(9.1%, 0%, 71.8%, 56.9%)
CIE-LAB	lab(44.18, -15.13, 40.73)
CIE-LCH	lch(44.18, 43.45, 110.39°)
OKLab	oklab(51.36% -0.0452 0.0914)
OKLCH	oklch(51.36% 0.102 116.3)
XYZ	xyz(11.0790, 13.9603, 3.4070)
Luminance	0.1396 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646E1F #291F6E

analogous

#6E501F #646E1F #3C6E1F

triadic

#646E1F #1F646E #6E1F64

tetradic

#646E1F #1F6E50 #291F6E #6E1F3C

square

#646E1F #1F6E50 #291F6E #6E1F3C

split-complementary

#646E1F #1F3C6E #501F6E

monochromatic

#161807 #393E12 #646E1F #8F9E2C #B7C93F

Accessibility & contrast

On white

5.54

#646E1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#646E1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646E1F

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646E1F	#FFFFFF	#000000	##FFFFFF
##646E1F	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)

#766813

Deuteranopia (green-blind)

#756925

Tritanopia (blue-blind)

#6B685E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646e1f;
/* rgb */ color: rgb(100, 110, 31);
/* oklch */ color: oklch(51.4% 0.102 116.3);

Tailwind

colors: {
  custom: {
    50: '#939760',
    500: '#646e1f',
    950: '#000000',
  },
}

SCSS

$custom: #646e1f;
$custom-light: #939760;
$custom-dark: #000000;

JSON

{
  "hex": "#646e1f",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 31
  },
  "hsl": {
    "h": 67.595,
    "s": 56.028,
    "l": 27.647
  },
  "oklch": {
    "l": 0.51356,
    "c": 0.10196,
    "h": 116.3
  },
  "luminance": 0.1396
}

Semantic roles & 50–950 ramp

primary

#646E1F

secondary

#5247A2

accent

#48DF5C

background

#F9F9F5

surface

#F2F2EA

border

#CCCCC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646E1F

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

Preview Lab → · Contrast checker → · Palette generator →