#63643B#63643B

#63643B is a mid, muted yellow. Relative luminance 0.121; OKLCH L 49.2% C 0.060 H 109.6°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#63643B
RGB	rgb(99, 100, 59)
HSL	hsl(61, 26%, 31%)
HSV	hsv(61, 41%, 39%)
CMYK	cmyk(1%, 0%, 41%, 60.8%)
CIE-LAB	lab(41.35, -7.33, 23.12)
CIE-LCH	lch(41.35, 24.26, 107.60°)
OKLab	oklab(49.18% -0.0201 0.0564)
OKLCH	oklch(49.18% 0.06 109.6)
XYZ	xyz(10.4923, 12.0829, 5.9163)
Luminance	0.1208 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63643B #3C3B64

analogous

#64503B #63643B #4E643B

triadic

#63643B #3B6364 #643B63

tetradic

#63643B #3B6450 #3C3B64 #643B4E

square

#63643B #3B6450 #3C3B64 #643B4E

split-complementary

#63643B #3B4E64 #503B64

monochromatic

#17170E #3D3E24 #63643B #898A52 #A9AA6F

Accessibility & contrast

On white

6.15

#63643B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#63643B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #63643B

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63643B	#FFFFFF	#000000	##FFFFFF
##63643B	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6138

Deuteranopia (green-blind)

#6A623D

Tritanopia (blue-blind)

#685F5A

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #63643b;
/* rgb */ color: rgb(99, 100, 59);
/* oklch */ color: oklch(49.2% 0.060 109.6);

Tailwind

colors: {
  custom: {
    50: '#909071',
    500: '#63643b',
    950: '#000000',
  },
}

SCSS

$custom: #63643b;
$custom-light: #909071;
$custom-dark: #000000;

JSON

{
  "hex": "#63643b",
  "rgb": {
    "r": 99,
    "g": 100,
    "b": 59
  },
  "hsl": {
    "h": 61.463,
    "s": 25.786,
    "l": 31.176
  },
  "oklch": {
    "l": 0.49181,
    "c": 0.05991,
    "h": 109.6
  },
  "luminance": 0.12083
}

Semantic roles & 50–950 ramp

primary

#63643B

secondary

#686794

accent

#66C268

background

#F8F8F6

surface

#F0F0EC

border

#CBCBC7

text

#0C0C08

muted

#7D7D7B

Preview Lab

Preview with #63643B

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

Preview Lab → · Contrast checker → · Palette generator →