#645E4C#645E4C

#645E4C is a mid, muted yellow. Relative luminance 0.112; OKLCH L 48.2% C 0.029 H 91.8°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#645E4C
RGB	rgb(100, 94, 76)
HSL	hsl(45, 14%, 35%)
HSV	hsv(45, 24%, 39%)
CMYK	cmyk(0%, 6%, 24%, 60.8%)
CIE-LAB	lab(39.98, -0.89, 11.21)
CIE-LCH	lch(39.98, 11.24, 94.53°)
OKLab	oklab(48.23% -0.0009 0.0287)
OKLCH	oklch(48.23% 0.029 91.8)
XYZ	xyz(10.5627, 11.2367, 8.4486)
Luminance	0.1124 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E4C #4C5264

analogous

#64524C #645E4C #5E644C

triadic

#645E4C #4C645E #5E4C64

tetradic

#645E4C #4C6452 #4C5264 #644C5E

square

#645E4C #4C6452 #4C5264 #644C5E

split-complementary

#645E4C #4C5E64 #524C64

monochromatic

#1E1D17 #413D32 #645E4C #877F66 #A49C87

Accessibility & contrast

On white

6.47

#645E4C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#645E4C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E4C

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E4C	#FFFFFF	#000000	##FFFFFF
##645E4C	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625D4B

Deuteranopia (green-blind)

#645F4D

Tritanopia (blue-blind)

#685B59

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #645e4c;
/* rgb */ color: rgb(100, 94, 76);
/* oklch */ color: oklch(48.2% 0.029 91.8);

Tailwind

colors: {
  custom: {
    50: '#908b7e',
    500: '#645e4c',
    950: '#000000',
  },
}

SCSS

$custom: #645e4c;
$custom-light: #908b7e;
$custom-dark: #000000;

JSON

{
  "hex": "#645e4c",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 76
  },
  "hsl": {
    "h": 45,
    "s": 13.636,
    "l": 34.51
  },
  "oklch": {
    "l": 0.48227,
    "c": 0.02867,
    "h": 91.8
  },
  "luminance": 0.11237
}

Semantic roles & 50–950 ramp

primary

#645E4C

secondary

#7A8091

accent

#83B671

background

#F8F8F7

surface

#F0F0EE

border

#CBCBC9

text

#0C0C09

muted

#7D7D7B

Preview Lab

Preview with #645E4C

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

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