#645E1E#645E1E

#645E1E is a mid, moderate yellow. Relative luminance 0.108; OKLCH L 47.4% C 0.084 H 104.0°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#645E1E
RGB	rgb(100, 94, 30)
HSL	hsl(55, 54%, 25%)
HSV	hsv(55, 70%, 39%)
CMYK	cmyk(0%, 6%, 70%, 60.8%)
CIE-LAB	lab(39.26, -6.19, 36.14)
CIE-LCH	lch(39.26, 36.66, 99.72°)
OKLab	oklab(47.42% -0.0202 0.0815)
OKLCH	oklch(47.42% 0.084 104)
XYZ	xyz(9.4929, 10.8088, 2.8143)
Luminance	0.1081 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E1E #1E2464

analogous

#643B1E #645E1E #47641E

triadic

#645E1E #1E645E #5E1E64

tetradic

#645E1E #1E643B #1E2464 #641E47

square

#645E1E #1E643B #1E2464 #641E47

split-complementary

#645E1E #1E4764 #3B1E64

monochromatic

#181607 #353210 #645E1E #938A2C #C2B73A

Accessibility & contrast

On white

6.64

#645E1E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#645E1E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E1E

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E1E	#FFFFFF	#000000	##FFFFFF
##645E1E	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675B16

Deuteranopia (green-blind)

#695E22

Tritanopia (blue-blind)

#6C5751

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645e1e;
/* rgb */ color: rgb(100, 94, 30);
/* oklch */ color: oklch(47.4% 0.084 104.0);

Tailwind

colors: {
  custom: {
    50: '#938b5e',
    500: '#645e1e',
    950: '#000000',
  },
}

SCSS

$custom: #645e1e;
$custom-light: #938b5e;
$custom-dark: #000000;

JSON

{
  "hex": "#645e1e",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 30
  },
  "hsl": {
    "h": 54.857,
    "s": 53.846,
    "l": 25.49
  },
  "oklch": {
    "l": 0.47422,
    "c": 0.084,
    "h": 104
  },
  "luminance": 0.10808
}

Semantic roles & 50–950 ramp

primary

#645E1E

secondary

#454C99

accent

#57DD4B

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0C04

muted

#7E7D79

Preview Lab

Preview with #645E1E

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

Preview Lab → · Contrast checker → · Palette generator →