#645B11#645B11

#645B11 is a mid, moderate yellow. Relative luminance 0.102; OKLCH L 46.6% C 0.090 H 102.0°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#645B11
RGB	rgb(100, 91, 17)
HSL	hsl(53, 71%, 23%)
HSV	hsv(53, 83%, 39%)
CMYK	cmyk(0%, 9%, 83%, 60.8%)
CIE-LAB	lab(38.26, -5.14, 40.55)
CIE-LCH	lch(38.26, 40.87, 97.23°)
OKLab	oklab(46.6% -0.0187 0.0882)
OKLCH	oklch(46.6% 0.09 102)
XYZ	xyz(9.0982, 10.2324, 2.0260)
Luminance	0.1023 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B11 #111A64

analogous

#643111 #645B11 #436411

triadic

#645B11 #11645B #5B1164

tetradic

#645B11 #116431 #111A64 #641143

square

#645B11 #116431 #111A64 #641143

split-complementary

#645B11 #114364 #311164

monochromatic

#1A1804 #302B08 #645B11 #988B1A #CDBA23

Accessibility & contrast

On white

6.89

#645B11 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#645B11 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B11

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B11	#FFFFFF	#000000	##FFFFFF
##645B11	1.00	6.89	3.05	6.89
#FFFFFF	6.89	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645801

Deuteranopia (green-blind)

#675C17

Tritanopia (blue-blind)

#6C544D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #645b11;
/* rgb */ color: rgb(100, 91, 17);
/* oklch */ color: oklch(46.6% 0.090 102.0);

Tailwind

colors: {
  custom: {
    50: '#938956',
    500: '#645b11',
    950: '#000000',
  },
}

SCSS

$custom: #645b11;
$custom-light: #938956;
$custom-dark: #000000;

JSON

{
  "hex": "#645b11",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 17
  },
  "hsl": {
    "h": 53.494,
    "s": 70.94,
    "l": 22.941
  },
  "oklch": {
    "l": 0.46598,
    "c": 0.09019,
    "h": 102
  },
  "luminance": 0.10232
}

Semantic roles & 50–950 ramp

primary

#645B11

secondary

#35409C

accent

#4EEE3A

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B03

muted

#7E7C78

Preview Lab

Preview with #645B11

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

Preview Lab → · Contrast checker → · Palette generator →