#645C2E#645C2E

#645C2E is a mid, moderate yellow. Relative luminance 0.106; OKLCH L 47.1% C 0.066 H 99.6°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#645C2E
RGB	rgb(100, 92, 46)
HSL	hsl(51, 37%, 29%)
HSV	hsv(51, 54%, 39%)
CMYK	cmyk(0%, 8%, 54%, 60.8%)
CIE-LAB	lab(38.83, -3.68, 27.40)
CIE-LCH	lch(38.83, 27.65, 97.66°)
OKLab	oklab(47.14% -0.011 0.065)
OKLCH	oklch(47.14% 0.066 99.6)
XYZ	xyz(9.5761, 10.5612, 4.1183)
Luminance	0.1056 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C2E #2E3664

analogous

#64412E #645C2E #51642E

triadic

#645C2E #2E645C #5C2E64

tetradic

#645C2E #2E6441 #2E3664 #642E51

square

#645C2E #2E6441 #2E3664 #642E51

split-complementary

#645C2E #2E5164 #412E64

monochromatic

#15130A #3A351B #645C2E #8E8341 #B3A65A

Accessibility & contrast

On white

6.75

#645C2E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#645C2E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C2E

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C2E	#FFFFFF	#000000	##FFFFFF
##645C2E	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645A2A

Deuteranopia (green-blind)

#665D30

Tritanopia (blue-blind)

#6B5651

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #645c2e;
/* rgb */ color: rgb(100, 92, 46);
/* oklch */ color: oklch(47.1% 0.066 99.6);

Tailwind

colors: {
  custom: {
    50: '#928a68',
    500: '#645c2e',
    950: '#000000',
  },
}

SCSS

$custom: #645c2e;
$custom-light: #928a68;
$custom-dark: #000000;

JSON

{
  "hex": "#645c2e",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 46
  },
  "hsl": {
    "h": 51.111,
    "s": 36.986,
    "l": 28.627
  },
  "oklch": {
    "l": 0.47142,
    "c": 0.06594,
    "h": 99.6
  },
  "luminance": 0.10561
}

Semantic roles & 50–950 ramp

primary

#645C2E

secondary

#586196

accent

#6CCD5B

background

#F9F8F6

surface

#F1F0EB

border

#CBCBC6

text

#0D0B06

muted

#7E7C7A

Preview Lab

Preview with #645C2E

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

Preview Lab → · Contrast checker → · Palette generator →