#645B4E#645B4E

#645B4E is a mid, muted orange. Relative luminance 0.107; OKLCH L 47.6% C 0.023 H 77.1°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#645B4E
RGB	rgb(100, 91, 78)
HSL	hsl(35, 12%, 35%)
HSV	hsv(35, 22%, 39%)
CMYK	cmyk(0%, 9%, 22%, 60.8%)
CIE-LAB	lab(39.14, 1.25, 8.82)
CIE-LCH	lch(39.14, 8.91, 81.93°)
OKLab	oklab(47.59% 0.0052 0.0228)
OKLCH	oklch(47.59% 0.023 77.1)
XYZ	xyz(10.3718, 10.7418, 8.7333)
Luminance	0.1074 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B4E #4E5764

analogous

#64504E #645B4E #62644E

triadic

#645B4E #4E645B #5B4E64

tetradic

#645B4E #4E6450 #4E5764 #644E62

square

#645B4E #4E6450 #4E5764 #644E62

split-complementary

#645B4E #4E6264 #504E64

monochromatic

#1F1C18 #423C33 #645B4E #867A69 #A39989

Accessibility & contrast

On white

6.67

#645B4E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#645B4E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B4E

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B4E	#FFFFFF	#000000	##FFFFFF
##645B4E	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)

#5F5B4D

Deuteranopia (green-blind)

#615D4E

Tritanopia (blue-blind)

#685857

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645b4e;
/* rgb */ color: rgb(100, 91, 78);
/* oklch */ color: oklch(47.6% 0.023 77.1);

Tailwind

colors: {
  custom: {
    50: '#90897f',
    500: '#645b4e',
    950: '#000000',
  },
}

SCSS

$custom: #645b4e;
$custom-light: #90897f;
$custom-dark: #000000;

JSON

{
  "hex": "#645b4e",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 78
  },
  "hsl": {
    "h": 35.455,
    "s": 12.36,
    "l": 34.902
  },
  "oklch": {
    "l": 0.47586,
    "c": 0.02334,
    "h": 77.1
  },
  "luminance": 0.10742
}

Semantic roles & 50–950 ramp

primary

#645B4E

secondary

#7D8591

accent

#8EB573

background

#F8F8F7

surface

#F0F0EE

border

#CBCBC9

text

#0C0B0A

muted

#7D7C7C

Preview Lab

Preview with #645B4E

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

Preview Lab → · Contrast checker → · Palette generator →