#645D2F#645D2F

#645D2F is a mid, moderate yellow. Relative luminance 0.107; OKLCH L 47.4% C 0.066 H 100.8°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#645D2F
RGB	rgb(100, 93, 47)
HSL	hsl(52, 36%, 29%)
HSV	hsv(52, 53%, 39%)
CMYK	cmyk(0%, 7%, 53%, 60.8%)
CIE-LAB	lab(39.15, -4.17, 27.22)
CIE-LCH	lch(39.15, 27.54, 98.71°)
OKLab	oklab(47.4% -0.0123 0.0647)
OKLCH	oklch(47.4% 0.066 100.8)
XYZ	xyz(9.6833, 10.7436, 4.2524)
Luminance	0.1074 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645D2F #2F3664

analogous

#64432F #645D2F #51642F

triadic

#645D2F #2F645D #5D2F64

tetradic

#645D2F #2F6443 #2F3664 #642F51

square

#645D2F #2F6443 #2F3664 #642F51

split-complementary

#645D2F #2F5164 #432F64

monochromatic

#15130A #3A361B #645D2F #8E8443 #B2A75B

Accessibility & contrast

On white

6.67

#645D2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#645D2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645D2F

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645D2F	#FFFFFF	#000000	##FFFFFF
##645D2F	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655B2B

Deuteranopia (green-blind)

#675D31

Tritanopia (blue-blind)

#6B5752

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645d2f;
/* rgb */ color: rgb(100, 93, 47);
/* oklch */ color: oklch(47.4% 0.066 100.8);

Tailwind

colors: {
  custom: {
    50: '#918a69',
    500: '#645d2f',
    950: '#000000',
  },
}

SCSS

$custom: #645d2f;
$custom-light: #918a69;
$custom-dark: #000000;

JSON

{
  "hex": "#645d2f",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 47
  },
  "hsl": {
    "h": 52.075,
    "s": 36.054,
    "l": 28.824
  },
  "oklch": {
    "l": 0.47395,
    "c": 0.06587,
    "h": 100.8
  },
  "luminance": 0.10743
}

Semantic roles & 50–950 ramp

primary

#645D2F

secondary

#596196

accent

#6BCC5C

background

#F9F8F6

surface

#F1F0EB

border

#CBCBC6

text

#0D0B06

muted

#7E7C7A

Preview Lab

Preview with #645D2F

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

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